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1 Indications And Usage
Therapy with lipid-altering agents should be only one component of multiple risk factor intervention in individuals at significantly increased risk for atherosclerotic vascular disease due to hypercholesterolemia. Drug therapy is recommended as an adjunct to diet when the response to a diet restricted in saturated fat and cholesterol and other nonpharmacologic measures alone has been inadequate. In patients with CHD or multiple risk factors for CHD, atorvastatin calcium tablets can be started simultaneously with diet.
1.1 Prevention Of Cardiovascular Disease In Adults
- In adult patients without clinically evident coronary heart disease, but with multiple risk factors for coronary heart disease such as age, smoking, hypertension, low HDL-C, or a family history of early coronary heart disease, atorvastatin calcium tablets are indicated to:Reduce the risk of myocardial infarctionReduce the risk of strokeReduce the risk for revascularization procedures and anginaIn adult patients with type 2 diabetes, and without clinically evident coronary heart disease, but with multiple risk factors for coronary heart disease such as retinopathy, albuminuria, smoking, or hypertension, atorvastatin calcium tablets are indicated to: Reduce the risk of myocardial infarctionReduce the risk of stroke In adult patients with clinically evident coronary heart disease, atorvastatin calcium tablets are indicated to: Reduce the risk of non-fatal myocardial infarctionReduce the risk of fatal and non-fatal strokeReduce the risk for revascularization proceduresReduce the risk of hospitalization for CHFReduce the risk of angina
- Atorvastatin calcium tablets are indicated As an adjunct to diet to reduce elevated total-C, LDL-C, apo B, and TG levels and to increase HDL-C in adult patients with primary hypercholesterolemia (heterozygous familial and nonfamilial) and mixed dyslipidemia (
- Fredrickson Types IIa and IIb);
- As an adjunct to diet for the treatment of adult patients with elevated serum TG levels (
- Fredrickson Type IV);
- For the treatment of adult patients with primary dysbetalipoproteinemia (
- Fredrickson Type III) who do not respond adequately to diet;
- To reduce total-C and LDL-C in patients with homozygous familial hypercholesterolemia (HoFH) as an adjunct to other lipid-lowering treatments (e.g., LDL apheresis) or if such treatments are unavailable; As an adjunct to diet to reduce total-C, LDL-C, and apo B levels in pediatric patients, 10 to 17 years of age, with heterozygous familial hypercholesterolemia (HeFH) if after an adequate trial of diet therapy the following findings are present:
- A. LDL-C remains ≥ 190 mg/dL or b. LDL-C remains ≥ 160 mg/dL and: there is a positive family history of premature cardiovascular disease ortwo or more other CVD risk factors are present in the pediatric patient
1.3 Limitations Of Use
Atorvastatin calcium tablets have not been studied in conditions where the major lipoprotein abnormality is elevation of chylomicrons
(Fredrickson Types I and V).
And Mixed Dyslipidemia
The recommended starting dose of atorvastatin calcium tablets are 10 or 20 mg once daily. Patients who require a large reduction in LDL-C (more than 45%) may be started at 40 mg once daily. The dosage range of atorvastatin calcium tablets are 10 to 80 mg once daily. Atorvastatin calcium tablets can be administered as a single dose at any time of the day, with or without food. The starting dose and maintenance doses of atorvastatin calcium tablets should be individualized according to patient characteristics such as goal of therapy and response. After initiation and/or upon titration of atorvastatin calcium tablets, lipid levels should be analyzed within 2 to 4 weeks and dosage adjusted accordingly.
2.2 Heterozygous Familial Hypercholesterolemia In Pediatric Patients
(10 Years To 17 Years Of Age)
The recommended starting dose of atorvastatin calcium tablets is 10 mg/day; the usual dose range is 20 mg orally once daily
[see Clinical Studies (
. Doses should be individualized according to the recommended goal of therapy
[see Indications and Usage (
1.2) and Clinical Pharmacology (
. Adjustments should be made at intervals of 4 weeks or more.
2.3 Homozygous Familial Hypercholesterolemia
The dosage of atorvastatin calcium tablets in patients with HoFH is 10 to 80 mg daily. Atorvastatin calcium tablets should be used as an adjunct to other lipid-lowering treatments (e.g., LDL apheresis) in these patients or if such treatments are unavailable.
2.4 Concomitant Lipid-Lowering Therapy
Atorvastatin calcium tablets may be used with bile acid resins. The combination of HMG-CoA reductase inhibitors (statins) and fibrates should generally be used with caution
[see Warnings and Precautions (
Drug Interactions (
2.5 Dosage In Patients With Renal Impairment
Renal disease does not affect the plasma concentrations nor LDL-C reduction of atorvastatin; thus, dosage adjustment in patients with renal dysfunction is not necessary
[see Warnings and Precautions (
5.1) and Clinical Pharmacology (
2.6 Dosage In Patients Taking Cyclosporine, Clarithromycin, Itraconazole, Or Certain Protease Inhibitors
In patients taking cyclosporine or the HIV protease inhibitors (tipranavir plus ritonavir) or the hepatitis C protease inhibitor (telaprevir), therapy with atorvastatin should be avoided. In patients with HIV taking lopinavir plus ritonavir, caution should be used when prescribing atorvastatin and the lowest dose necessary employed. In patients taking clarithromycin, itraconazole, or in patients with HIV taking a combination of saquinavir plus ritonavir, darunavir plus ritonavir, fosamprenavir, or fosamprenavir plus ritonavir, therapy with atorvastatin should be limited to 20 mg, and appropriate clinical assessment is recommended to ensure that the lowest dose necessary of
atorvastatin is employed. In patients taking the HIV protease inhibitor nelfinavir or the hepatitis C protease inhibitor boceprevir, therapy with atorvastatin should be limited to 40 mg, and appropriate clinical assessment is recommended to ensure that the lowest dose necessary of atorvastatin is employed
[see Warnings and Precautions (
5.1) and Drug Interactions (
3 Dosage Forms And Strengths
White to off-white, oval, biconvex, film-coated tablets containing 10, 20, 40, and 80 mg atorvastatin calcium.
- Active Liver Disease, Which May Include Unexplained Persistent Elevations in Hepatic Transaminase LevelsHypersensitivity to Any Component of This MedicationPregnancy
- [see Use in Specific Populations (
- [see Use in Specific Populations (
5.1 Skeletal Muscle
Rare cases of rhabdomyolysis with acute renal failure secondary to myoglobinuria have been reported with atorvastatin and with other drugs in this class. A history of renal impairment may be a risk factor for the development of rhabdomyolysis. Such patients merit closer monitoring for skeletal muscle effects.
Atorvastatin, like other statins, occasionally causes myopathy, defined as muscle aches or muscle weakness in conjunction with increases in creatine phosphokinase (CPK) values >10 times ULN. The concomitant use of higher doses of atorvastatin with certain drugs such as cyclosporine and strong CYP3A4 inhibitors (e.g., clarithromycin, itraconazole, and HIV protease inhibitors) increases the risk of myopathy/rhabdomyolysis. There have been rare reports of immune-mediated necrotizing myopathy (IMNM), an autoimmune myopathy, associated with statin use. IMNM is characterized by: proximal muscle weakness and elevated serum creatine kinase, which persist despite discontinuation of statin treatment; muscle biopsy showing necrotizing myopathy without significant inflammation; improvement with immunosuppressive agents. Myopathy should be considered in any patient with diffuse myalgias, muscle tenderness or weakness, and/or marked elevation of CPK. Patients should be advised to report promptly unexplained muscle pain, tenderness, or weakness, particularly if accompanied by malaise or fever or if muscle signs and symptoms persist after discontinuing atorvastatin. Atorvastatin therapy should be discontinued if markedly elevated CPK levels occur or myopathy is diagnosed or suspected. The risk of myopathy during treatment with drugs in this class is increased with concurrent administration of cyclosporine, fibric acid derivatives, erythromycin, clarithromycin, the hepatitis C protease inhibitor telaprevir, combinations of HIV protease inhibitors, including saquinavir plus ritonavir, lopinavir plus ritonavir, tipranavir plus ritonavir, darunavir plus ritonavir, fosamprenavir, and fosamprenavir plus ritonavir, niacin, or azole antifungals. Physicians considering combined therapy with atorvastatin and fibric acid derivatives, erythromycin, clarithromycin, a combination of saquinavir plus ritonavir, lopinavir plus ritonavir, darunavir plus ritonavir, fosamprenavir, or fosamprenavir plus ritonavir, azole antifungals, or lipid-modifying doses of niacin should carefully weigh the potential benefits and risks and should carefully monitor patients for any signs or symptoms of muscle pain, tenderness, or weakness, particularly during the initial months of therapy and during any periods of upward dosage titration of either drug. Lower starting and maintenance doses of atorvastatin should be considered when taken concomitantly with the aforementioned drugs
[see Drug Interactions (7)]. Periodic creatine phosphokinase (CPK) determinations may be considered in such situations, but there is no assurance that such monitoring will prevent the occurrence of severe myopathy.
Prescribing recommendations for interacting agents are summarized in Table 2
Dosage and Administration (2.6),
Drug Interactions (7),
and Clinical Pharmacology (12.3)].
Table 2. Drug Interactions Associated with Increased Risk of Myopathy/RhabdomyolysisInteracting AgentsPrescribing RecommendationsCyclosporine, HIV protease inhibitors (tipranavir plus ritonavir), hepatitis C protease inhibitor (telaprevir)Avoid atorvastatinHIV protease inhibitor (lopinavir plus ritonavir)Use with caution and lowest dose necessaryClarithromycin, itraconazole, HIV protease inhibitors (saquinavir plus ritonavir
Use with caution and with the lowest dose necessary (12.3), darunavir plus ritonavir, fosamprenavir, fosamprenavir plus ritonavir)
Do not exceed 20 mg atorvastatin dailyHIV protease inhibitor (nelfinavir)
Hepatitis C protease inhibitor (boceprevir)
Do not exceed 40 mg atorvastatin dailyCases of myopathy, including rhabdomyolysis, have been reported with atorvastatin co-administered with colchicine, and caution should be exercised when prescribing atorvastatin with colchicine
[see Drug Interactions (7.11)].
Atorvastatin therapy should be temporarily withheld or discontinued in any patient with an acute, serious condition suggestive of a myopathy or having a risk factor predisposing to the development of renal failure secondary to rhabdomyolysis (e.g., severe acute infection, hypotension, major surgery, trauma, severe metabolic, endocrine and electrolyte disorders, and uncontrolled seizures).
5.2 Liver Dysfunction
Statins, like some other lipid-lowering therapies, have been associated with biochemical abnormalities of liver function.
Persistent elevations (>3 times the upper limit of normal [ULN] occurring on 2 or more occasions) in serum transaminases occurred in 0.7% of patients who received atorvastatin in clinical trials. The incidence of these abnormalities was 0.2%, 0.2%, 0.6%, and 2.3% for 10, 20, 40, and 80 mg, respectively. One patient in clinical trials developed jaundice. Increases in liver function tests (LFT) in other patients were not associated with jaundice or other clinical signs or symptoms. Upon dose reduction, drug interruption, or discontinuation, transaminase levels returned to or near pretreatment levels without sequelae. Eighteen of 30 patients with persistent LFT elevations continued treatment with a reduced dose of atorvastatin. It is recommended that liver enzyme tests be obtained prior to initiating therapy with atorvastatin and repeated as clinically indicated. There have been rare postmarketing reports of fatal and non-fatal hepatic failure in patients taking statins, including atorvastatin. If serious liver injury with clinical symptoms and/or hyperbilirubinemia or jaundice occurs during treatment with atorvastatin, promptly interrupt therapy. If an alternate etiology is not found, do not restart atorvastatin. Atorvastatin should be used with caution in patients who consume substantial quantities of alcohol and/or have a history of liver disease. Active liver disease or unexplained persistent transaminase elevations are contraindications to the use of atorvastatin
[see Contraindications (4)].
5.3 Endocrine Function
Increases in HbA1c and fasting serum glucose levels have been reported with HMG-CoA reductase inhibitors, including atorvastatin.Statins interfere with cholesterol synthesis and theoretically might blunt adrenal and/or gonadal steroid production. Clinical studies have shown that atorvastatin does not reduce basal plasma cortisol concentration or impair adrenal reserve. The effects of statins on male fertility have not been studied in adequate numbers of patients. The effects, if any, on the pituitary-gonadal axis in premenopausal women are unknown. Caution should be exercised if a statin is administered concomitantly with drugs that may decrease the levels or activity of endogenous steroid hormones, such as ketoconazole, spironolactone, and cimetidine.
5.4 Cns Toxicity
Brain hemorrhage was seen in a female dog treated for 3 months at 120 mg/kg/day. Brain hemorrhage and optic nerve vacuolation were seen in another female dog that was sacrificed in moribund condition after 11 weeks of escalating doses up to 280 mg/kg/day. The 120 mg/kg dose resulted in a systemic exposure approximately 16 times the human plasma area-under-the-curve (AUC, 0 to 24 hours) based on the maximum human dose of 80 mg/day. A single tonic convulsion was seen in each of 2 male dogs (one treated at 10 mg/kg/day and one at 120 mg/kg/day) in a 2-year study. No CNS lesions have been observed in mice after chronic treatment for up to 2 years at doses up to 400 mg/kg/day or in rats at doses up to 100 mg/kg/day. These doses were 6 to 11 times (mouse) and 8 to 16 times (rat) the human AUC (0 to 24) based on the maximum recommended human dose of 80 mg/day.CNS vascular lesions, characterized by perivascular hemorrhages, edema, and mononuclear cell infiltration of perivascular spaces, have been observed in dogs treated with other members of this class. A chemically similar drug in this class produced optic nerve degeneration (Wallerian degeneration of retinogeniculate fibers) in clinically normal dogs in a dose-dependent fashion at a dose that produced plasma drug levels about 30 times higher than the mean drug level in humans taking the highest recommended dose.
5.5 Use In Patients With Recent Stroke Or Tia
In a post-hoc analysis of the Stroke Prevention by Aggressive Reduction in Cholesterol Levels (SPARCL) study where atorvastatin calcium 80 mg vs. placebo was administered in 4,731 subjects without CHD who had a stroke or TIA within the preceding 6 months, a higher incidence of hemorrhagic stroke was seen in the atorvastatin calcium 80 mg group compared to placebo (55, 2.3% atorvastatin vs. 33, 1.4% placebo; HR: 1.68, 95% CI: 1.09, 2.59; p=0.0168). The incidence of fatal hemorrhagic stroke was similar across treatment groups (17 vs. 18 for the atorvastatin and placebo groups, respectively). The incidence of nonfatal hemorrhagic stroke was significantly higher in the atorvastatin group (38, 1.6%) as compared to the placebo group (16, 0.7%). Some baseline characteristics, including hemorrhagic and lacunar stroke on study entry, were associated with a higher incidence of hemorrhagic stroke in the atorvastatin group
[see Adverse Reactions (6.1)].
6 Adverse Reactions
The following serious adverse reactions are discussed in greater detail in other sections of the label: Rhabdomyolysis and myopathy
[see Warnings and Precautions (5.1)]Liver enzyme abnormalities
Warnings and Precautions (5.2)]
6.1 Clinical Trials Experience
Because clinical trials are conducted under widely varying conditions, the adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice.In the atorvastatin calcium placebo-controlled clinical trial database of 16,066 patients (8755 atorvastatin calcium vs. 7311 placebo; age range 10 to 93 years, 39% women, 91% Caucasians, 3% Blacks, 2% Asians, 4% other) with a median treatment duration of 53 weeks, 9.7% of patients on atorvastatin calcium and 9.5% of the patients on placebo discontinued due to adverse reactions regardless of causality. The five most common adverse reactions in patients treated with atorvastatin calcium that led to treatment discontinuation and occurred at a rate greater than placebo were: myalgia (0.7%), diarrhea (0.5%), nausea (0.4%), alanine aminotransferase increase (0.4%), and hepatic enzyme increase (0.4%).The most commonly reported adverse reactions (incidence ≥ 2% and greater than placebo) regardless of causality, in patients treated with atorvastatin calcium in placebo controlled trials (n=8755) were: nasopharyngitis (8.3%), arthralgia (6.9%), diarrhea (6.8%), pain in extremity (6.0%), and urinary tract infection (5.7%).Table 3 summarizes the frequency of clinical adverse reactions, regardless of causality, reported in ≥ 2% and at a rate greater than placebo in patients treated with atorvastatin calcium (n=8755), from seventeen placebo-controlled trials. Table 3. Clinical adverse reactions occurring in ≥ 2% in patients treated with any dose of atorvastatin calcium and at an incidence greater than placebo regardless of causality (% of patients).AdverseAny dose10 mg20 mg40 mg80 mgPlaceboReaction
Adverse Reaction ≥ 2% in any dose greater than placeboN=8755N=3908N=188N=604N=4055N=7311Nasopharyngitis8.312.95.37.04.28.2Arthralgia 6.98.911.710.64.36.5Diarrhea 188.8.131.52184.108.40.206Pain in extremity 6.08.53.79.33.15.9Urinary tract infection 220.127.116.11.04.15.6Dyspepsia 18.104.22.168.03.34.3Nausea 4.03.73.77.13.83.5Musculoskeletal pain 22.214.171.124.12.33.6Muscle Spasms 126.96.36.199.12.43.0Myalgia 188.8.131.52.42.73.1Insomnia 3.02.81.15.32.82.9Pharyngolaryngeal pain 184.108.40.206.80.72.1Other adverse reactions reported in placebo-controlled studies include Body as a whole: malaise, pyrexia;
Digestive system: abdominal discomfort, eructation, flatulence, hepatitis, cholestasis;
Musculoskeletal system: musculoskeletal pain, muscle fatigue, neck pain, joint swelling;
Metabolic and nutritional system: transaminases increase, liver function test abnormal, blood alkaline phosphatase increase, creatine phosphokinase increase, hyperglycemia;
Nervous system: nightmare;
Respiratory system: epistaxis;
Skin and appendages: urticaria;
Special senses: vision blurred, tinnitus;
Urogenital system: white blood cells urine positive.
Anglo-Scandinavian Cardiac Outcomes Trial (ASCOT) In ASCOT
Clinical Studies (14.1)] involving 10,305 participants (age range 40 to 80 years, 19% women; 94.6% Caucasians, 2.6% Africans, 1.5% South Asians, 1.3% mixed/other) treated with atorvastatin calcium 10 mg daily (n=5,168) or placebo (n=5,137), the safety and tolerability profile of the group treated with atorvastatin calcium was comparable to that of the group treated with placebo during a median of 3.3 years of follow-up.
Collaborative Atorvastatin Diabetes Study (CARDS) In CARDS
Clinical Studies (14.1)] involving 2,838 subjects (age range 39 to 77 years, 32% women; 94.3% Caucasians, 2.4% South Asians, 2.3% Afro-Caribbean, 1.0% other) with type 2 diabetes treated with atorvastatin calcium 10 mg daily (n=1,428) or placebo (n=1,410), there was no difference in the overall frequency of adverse reactions or serious adverse reactions between the treatment groups during a median follow-up of 3.9 years. No cases of rhabdomyolysis were reported.
Treating to New Targets Study (TNT) In TNT
Clinical Studies (14.1)] involving 10,001 subjects (age range 29 to 78 years, 19% women; 94.1% Caucasians, 2.9% Blacks, 1.0% Asians, 2.0% other) with clinically evident CHD treated with atorvastatin calcium 10 mg daily (n=5006) or atorvastatin calcium 80 mg daily (n=4995), there were more serious adverse reactions and discontinuations due to adverse reactions in the high-dose atorvastatin group (92, 1.8%; 497, 9.9%, respectively) as compared to the low-dose group (69, 1.4%; 404, 8.1%, respectively) during a median follow-up of 4.9 years. Persistent transaminase elevations (≥3 x ULN twice within 4 to 10 days) occurred in 62 (1.3%) individuals with atorvastatin 80 mg and in nine (0.2%) individuals with atorvastatin 10 mg. Elevations of CK (≥ 10 x ULN) were low overall, but were higher in the high-dose atorvastatin treatment group (13, 0.3%) compared to the low-dose atorvastatin group (6, 0.1%).
Incremental Decrease in Endpoints through Aggressive Lipid Lowering Study (IDEAL)In IDEAL
Clinical Studies (14.1)] involving 8,888 subjects (age range 26 to 80 years, 19% women; 99.3% Caucasians, 0.4% Asians, 0.3% Blacks, 0.04% other) treated with atorvastatin calcium 80 mg/day (n=4439) or simvastatin 20 to 40 mg daily (n=4449), there was no difference in the overall frequency of adverse reactions or serious adverse reactions between the treatment groups during a median follow-up of 4.8 years.
Stroke Prevention by Aggressive Reduction in Cholesterol Levels (SPARCL) In SPARCL involving 4731 subjects (age range 21 to 92 years, 40% women; 93.3% Caucasians, 3.0% Blacks, 0.6% Asians, 3.1% other) without clinically evident CHD but with a stroke or transient ischemic attack (TIA) within the previous 6 months treated with atorvastatin calcium 80 mg (n=2365) or placebo (n=2366) for a median follow-up of 4.9 years, there was a higher incidence of persistent hepatic transaminase elevations (≥ 3 x ULN twice within 4 to 10 days) in the atorvastatin group (0.9%) compared to placebo (0.1%). Elevations of CK (>10 x ULN) were rare, but were higher in the atorvastatin group (0.1%) compared to placebo (0.0%). Diabetes was reported as an adverse reaction in 144 subjects (6.1%) in the atorvastatin group and 89 subjects (3.8%) in the placebo group
Warnings and Precautions (5.5)].
In a post-hoc analysis, atorvastatin calcium 80 mg reduced the incidence of ischemic stroke (218/2365, 9.2% vs. 274/2366, 11.6%) and increased the incidence of hemorrhagic stroke (55/2365, 2.3% vs. 33/2366, 1.4%) compared to placebo. The incidence of fatal hemorrhagic stroke was similar between groups (17 atorvastatin calcium vs. 18 placebo). The incidence of non-fatal hemorrhagic strokes was significantly greater in the atorvastatin group (38 non-fatal hemorrhagic strokes) as compared to the placebo group (16 non-fatal hemorrhagic strokes). Subjects who entered the study with a hemorrhagic stroke appeared to be at increased risk for hemorrhagic stroke [7 (16%) atorvastatin calcium vs. 2 (4%) placebo]. There were no significant differences between the treatment groups for all-cause mortality: 216 (9.1%) in the atorvastatin calcium 80 mg/day group vs. 211 (8.9%) in the placebo group. The proportions of subjects who experienced cardiovascular death were numerically smaller in the atorvastatin calcium 80 mg group (3.3%) than in the placebo group (4.1%). The proportions of subjects who experienced non-cardiovascular death were numerically larger in the atorvastatin calcium 80 mg group (5.0%) than in the placebo group (4.0%). Adverse Reactions from Clinical Studies of Atorvastatin Calcium in Pediatric Patients In a 26-week controlled study in boys and postmenarchal girls with HeFH (ages 10 years to 17 years) (n=140, 31% female; 92% Caucasians, 1.6% Blacks, 1.6% Asians, 4.8% other), the safety and tolerability profile of atorvastatin calcium 10 to 20 mg daily, as an adjunct to diet to reduce total cholesterol, LDL-C, and apo B levels, was generally similar to that of placebo
[see Use in Special Populations (
8.4) and Clinical Studies (
6.2 Postmarketing Experience
The following adverse reactions have been identified during postapproval use of atorvastatin calcium. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.Adverse reactions associated with atorvastatin calcium therapy reported since market introduction, that are not listed above, regardless of causality assessment, include the following: anaphylaxis, angioneurotic edema, bullous rashes (including erythema multiforme, Stevens-Johnson syndrome, and toxic epidermal necrolysis), rhabdomyolysis, myositis, fatigue, tendon rupture, fatal and non-fatal hepatic failure, dizziness, depression, peripheral neuropathy, pancreatitis and interstitial lung disease.There have been rare reports of immune-mediated necrotizing myopathy associated with statin use
Warnings and Precautions (5.1)].
There have been rare postmarketing reports of cognitive impairment (e.g., memory loss, forgetfulness, amnesia, memory impairment, confusion) associated with statin use. These cognitive issues have been reported for all statins. The reports are generally nonserious, and reversible upon statin discontinuation, with variable times to symptom onset (1 day to years) and symptom resolution (median of 3 weeks).
7 Drug Interactions
The risk of myopathy during treatment with statins is increased with concurrent administration of fibric acid derivatives, lipid-modifying doses of niacin, cyclosporine, or strong CYP 3A4 inhibitors (e.g., clarithromycin, HIV protease inhibitors, and itraconazole)
[see Warnings and Precautions (5.1) and Clinical Pharmacology (12.3)].
7.1 Strong Inhibitors Of Cyp 3A4
Atorvastatin is metabolized by cytochrome P450 3A4. Concomitant administration of atorvastatin with strong inhibitors of CYP 3A4 can lead to increases in plasma concentrations of atorvastatin. The extent of interaction and potentiation of effects depend on the variability of effect on CYP 3A4.Clarithromycin Atorvastatin AUC was significantly increased with concomitant administration of atorvastatin 80 mg with clarithromycin (500 mg twice daily) compared to that of atorvastatin alone
Clinical Pharmacology (12.3)]
. Therefore, in patients taking clarithromycin, caution should be used when the atorvastatin dose exceeds 20 mg
[see Dosage and Administration (
2.6) and Warnings and Precautions (
Combination of Protease Inhibitors Atorvastatin AUC was significantly increased with concomitant administration of atorvastatin with several combinations of HIV protease inhibitors, as well as with the hepatitis C protease inhibitor telaprevir, compared to that of atorvastatin alone
Clinical Pharmacology (12.3)]
. Therefore, in patients taking the HIV protease inhibitor tipranavir plus ritonavir, or the hepatitis C protease inhibitor telaprevir, concomitant use of atorvastatin should be avoided. In patients taking the HIV protease inhibitor lopinavir plus ritonavir, caution should be used when prescribing atorvastatin and the lowest dose necessary should be used. In patients taking the HIV protease inhibitors saquinavir plus ritonavir, darunavir plus ritonavir, fosamprenavir, or fosamprenavir plus ritonavir, the dose of atorvastatin should not exceed 20 mg and should be used with caution
[see Dosage and Administration (
2.6) and Warnings and Precautions (
. In patients taking the HIV protease inhibitor nelfinavir or the hepatitis C protease inhibitor boceprevir, the dose of atorvastatin should not exceed 40 mg and close clinical monitoring is recommended.
ItraconazoleAtorvastatin AUC was significantly increased with concomitant administration of atorvastatin 40 mg and itraconazole 200 mg
Clinical Pharmacology (12.3)]
. Therefore, in patients taking itraconazole, caution should be used when the atorvastatin dose exceeds 20 mg
[see Dosage and Administration (
2.6) and Warnings and Precautions (
7.2 Grapefruit Juice
Contains one or more components that inhibit CYP 3A4 and can increase plasma concentrations of atorvastatin, especially with excessive grapefruit juice consumption (>1.2 liters per day).
Atorvastatin and atorvastatin-metabolites are substrates of the OATP1B1 transporter. Inhibitors of the OATP1B1 (e.g., cyclosporine) can increase the bioavailability of atorvastatin. Atorvastatin AUC was significantly increased with concomitant administration of atorvastatin 10 mg and cyclosporine 5.2 mg/kg/day compared to that of atorvastatin alone
Clinical Pharmacology (12.3)]
. The co-administration of atorvastatin with cyclosporine should be avoided
Warnings and Precautions (5.1)].
Due to an increased risk of myopathy/rhabdomyolysis when HMG-CoA reductase inhibitors are co-administered with gemfibrozil, concomitant administration of atorvastatin with gemfibrozil should be avoided
[see Warnings and Precautions (5.1)].
7.5 Other Fibrates
Because it is known that the risk of myopathy during treatment with HMG-CoA reductase inhibitors is increased with concurrent administration of other fibrates, atorvastatin should be administered with caution when used concomitantly with other fibrates
Warnings and Precautions (5.1)].
The risk of skeletal muscle effects may be enhanced when atorvastatin is used in combination with niacin; a reduction in atorvastatin dosage should be considered in this setting
Warnings and Precautions (5.1)].
7.7 Rifampin Or Other Inducers Of Cytochrome P450 3A4
Concomitant administration of atorvastatin with inducers of cytochrome P450 3A4 (e.g., efavirenz, rifampin) can lead to variable reductions in plasma concentrations of atorvastatin. Due to the dual interaction mechanism of rifampin, simultaneous co-administration of atorvastatin with rifampin is recommended, as delayed administration of atorvastatin after administration of rifampin has been associated with a significant reduction in atorvastatin plasma concentrations.
When multiple doses of atorvastatin and digoxin were co-administered, steady state plasma digoxin concentrations increased
[see Clinical Pharmacology (
. Patients taking digoxin should be monitored appropriately.
7.9 Oral Contraceptives
Co-administration of atorvastatin and an oral contraceptive increased AUC values for norethindrone and ethinyl estradiol
Clinical Pharmacology (12.3)]. These increases should be considered when selecting an oral contraceptive for a woman taking atorvastatin.
Atorvastatin had no clinically significant effect on prothrombin time when administered to patients receiving chronic warfarin treatment.
Cases of myopathy, including rhabdomyolysis, have been reported with atorvastatin co-administered with colchicine, and caution should be exercised when prescribing atorvastatin with colchicine.
Risk SummaryAtorvastatin calcium is contraindicated for use in pregnant women since safety in pregnant women has not been established and there is no apparent benefit of lipid lowering drugs during pregnancy. Because HMG-CoA reductase inhibitors decrease cholesterol synthesis and possibly the synthesis of other biologically active substances derived from cholesterol, atorvastatin calcium may cause fetal harm when administered to a pregnant woman. Atorvastatin calcium should be discontinued as soon as pregnancy is recognized
[see Contraindications (
. Limited published data on the use of atorvastatin are insufficient to determine a drug-associated risk of major congenital malformations or miscarriage. In animal reproduction studies in rats and rabbits there was no evidence of embryo-fetal toxicity or congenital malformations at doses up to 30 and 20 times, respectively, the human exposure at the maximum recommended human dose (MRHD) of 80 mg, based on body surface area (mg/m
2). In rats administered atorvastatin during gestation and lactation, decreased postnatal growth and development was observed at doses ≥ 6 times the MRHD
The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively.Data Human Data Limited published data on atorvastatin calcium from observational studies, meta-analyses and case reports have not shown an increased risk of major congenital malformations or miscarriage. Rare reports of congenital anomalies have been received following intrauterine exposure to other HMG-CoA reductase inhibitors. In a review of approximately 100 prospectively followed pregnancies in women exposed to simvastatin or lovastatin, the incidences of congenital anomalies, spontaneous abortions, and fetal deaths/stillbirths did not exceed what would be expected in the general population. The number of cases is adequate to exclude a ≥3 to 4-fold increase in congenital anomalies over the background incidence. In 89% of the prospectively followed pregnancies, drug treatment was initiated prior to pregnancy and was discontinued at some point in the first trimester when pregnancy was identified. Animal DataAtorvastatin crosses the rat placenta and reaches a level in fetal liver equivalent to that of maternal plasma. Atorvastatin was administered to pregnant rats and rabbits during organogenesis at oral doses up to 300 mg/kg/day and 100 mg/kg/day, respectively. Atorvastatin was not teratogenic in rats at doses up to 300 mg/kg/day or in rabbits at doses up to 100 mg/kg/day. These doses resulted in multiples of about 30 times (rat) or 20 times (rabbit) the human exposure at the MRHD based on surface area (mg/m
2). In rats, the maternally toxic dose of 300 mg/kg resulted in increased post-implantation loss and decreased fetal body weight. At the maternally toxic doses of 50 and 100 mg/kg/day in rabbits, there was increased post-implantation loss, and at 100 mg/kg/day fetal body weights were decreased.
In a study in pregnant rats administered 20, 100, or 225 mg/kg/day from gestation day 7 through to lactation day 20 (weaning), there was decreased survival at birth, postnatal day 4, weaning, and post-weaning in pups of mothers dosed with 225 mg/kg/day, a dose at which maternal toxicity was observed. Pup body weight was decreased through postnatal day 21 at 100 mg/kg/day, and through postnatal day 91 at 225 mg/kg/day. Pup development was delayed (rotorod performance at 100 mg/kg/day and acoustic startle at 225 mg/kg/day; pinnae detachment and eye-opening at 225 mg/kg/day). These doses correspond to 6 times (100 mg/kg) and 22 times (225 mg/kg) the human exposure at the MRHD, based on AUC.
Risk Summary Atorvastatin calcium use is contraindicated during breastfeeding
[see Contraindications (
. There is no available information on the effects of the drug on the breastfed infant or the effects of the drug on milk production. It is not known whether atorvastatin is present in human milk, but it has been shown that another drug in this class passes into human milk and atorvastatin is present in rat milk. Because of the potential for serious adverse reactions in a breastfed infant, advise women that breastfeeding is not recommended during treatment with atorvastatin calcium.
8.3 Females And Males Of Reproductive Potential
Contraception Atorvastatin calcium may cause fetal harm when administered to a pregnant woman. Advise females of reproductive potential to use effective contraception during treatment with atorvastatin calcium
[see Use in Specific Populations (
8.4 Pediatric Use
- Heterozygous Familial Hypercholesterolemia (HeFH) The safety and effectiveness of atorvastatin calcium have been established in pediatric patients, 10 years to 17 years of age, with HeFH as an adjunct to diet to reduce total cholesterol, LDL-C, and apo B levels when, after an adequate trial of diet therapy, the following are present:LDL-C ≥ 190 mg/dL, or LDL-C ≥ 160 mg/dL and
- A positive family history of FH, or premature CVD in a first, or second-degree relative, ortwo or more other CVD risk factors are present. Use of atorvastatin calcium for this indication is supported by evidence from
- [see Dosage and Administration (
- 2.2), Adverse Reactions (
- 6.1), Clinical Pharmacology (
- 12.3), and Clinical Studies (
- A placebo-controlled clinical trial of 6 months duration in 187 boys and postmenarchal girls, 10 years to 17 years of age. Patients treated with 10 mg or 20 mg daily atorvastatin calcium had an adverse reaction profile generally similar to that of patients treated with placebo. In this limited controlled study, there was no significant effect on growth or sexual maturation in boys or on menstrual cycle length in girls.Advise postmenarchal girls of contraception recommendations, if appropriate for the patient
- [see Use in Specific Populations (
- 8.1), (
- The long-term efficacy of atorvastatin calcium therapy initiated in childhood to reduce morbidity and mortality in adulthood has not been established. The safety and efficacy of atorvastatin calcium have not been established in pediatric patients younger than 10 years of age with HeFH. Additional pediatric use information is approved for Pfizer’s LIPITOR (atorvastatin calcium) tablets. However, due to Pfizer’s marketing exclusivity rights, this drug product is not labeled with that pediatric information.
- Homozygous Familial Hypercholesterolemia (HoFH) Clinical efficacy of atorvastatin calcium with dosages up to 80 mg/day for 1 year was evaluated in an uncontrolled study of patients with HoFH including 8 pediatric patients
- [see Clinical Studies (
8.5 Geriatric Use
Of the 39,828 patients who received atorvastatin calcium in clinical studies, 15,813 (40%) were ≥65 years old and 2,800 (7%) were ≥75 years old. No overall differences in safety or effectiveness were observed between these subjects and younger subjects, and other reported clinical experience has not identified differences in responses between the elderly and younger patients, but greater sensitivity of some older adults cannot be ruled out. Since advanced age (≥65 years) is a predisposing factor for myopathy, atorvastatin calcium should be prescribed with caution in the elderly.
8.6 Hepatic Impairment
Atorvastatin calcium is contraindicated in patients with active liver disease which may include unexplained persistent elevations in hepatic transaminase levels
[see Contraindications (4) and Clinical Pharmacology (12.3)].
There is no specific treatment for atorvastatin overdosage. In the event of an overdose, the patient should be treated symptomatically, and supportive measures instituted as required. Due to extensive drug binding to plasma proteins, hemodialysis is not expected to significantly enhance atorvastatin clearance.
Atorvastatin calcium is a synthetic lipid-lowering agent. Atorvastatin is an inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase. This enzyme catalyzes the conversion of HMG-CoA to mevalonate, an early and rate-limiting step in cholesterol biosynthesis. The drug substance used in atorvastatin calcium tablets, USP is atorvastatin calcium in the form of propylene glycol solvate. The chemical name for atorvastatin calcium propylene glycol solvate is calcium bis((3R,5R)-7-[3-(anilinocarbonyl)-5-(4-fluorophenyl)-2-isopropyl-4-phenyl-1H-pyrrol-1-yl]-3,5-dihydroxyheptanoate) propylene glycol solvate. The empirical formula of atorvastatin calcium propylene glycol solvate is C
10 * C
2 and its molecular weight is 1231.46 g/mol. Its structural formula is:
Atorvastatin calcium is a white to off-white solid that is insoluble in aqueous solutions of pH 4 and below. Atorvastatin calcium is slightly soluble in distilled water, pH 7.4 phosphate buffer, and acetonitrile; slightly soluble in ethanol; and freely soluble in methanol. Atorvastatin calcium tablets, USP for oral administration contain 10, 20, 40, or 80 mg atorvastatin and the following inactive ingredients: calcium acetate, colloidal silicon dioxide, croscarmellose sodium, hydroxypropyl cellulose, hypromellose, magnesium stearate (vegetable source), microcrystalline cellulose, polyethylene glycol, sodium carbonate, and titanium dioxide.
12.1 Mechanism Of Action
Atorvastatin is a selective, competitive inhibitor of HMG-CoA reductase, the rate-limiting enzyme that converts 3-hydroxy-3-methylglutaryl-coenzyme A to mevalonate, a precursor of sterols, including cholesterol. In animal models, atorvastatin calcium lowers plasma cholesterol and lipoprotein levels by inhibiting HMG-CoA reductase and cholesterol synthesis in the liver and by increasing the number of hepatic LDL receptors on the cell surface to enhance uptake and catabolism of LDL; atorvastatin calcium also reduces LDL production and the number of LDL particles.
Atorvastatin, as well as some of its metabolites, are pharmacologically active in humans. The liver is the primary site of action and the principal site of cholesterol synthesis and LDL clearance. Drug dosage, rather than systemic drug concentration, correlates better with LDL-C reduction. Individualization of drug dosage should be based on therapeutic response
[see Dosage and Administration (2)].
AbsorptionAtorvastatin is rapidly absorbed after oral administration; maximum plasma concentrations occur within 1 to 2 hours. Extent of absorption increases in proportion to atorvastatin dose. The absolute bioavailability of atorvastatin (parent drug) is approximately 14% and the systemic availability of HMG-CoA reductase inhibitory activity is approximately 30%. The low systemic availability is attributed to presystemic clearance in gastrointestinal mucosa and/or hepatic first-pass metabolism. Although food decreases the rate and extent of drug absorption by approximately 25% and 9%, respectively, as assessed by C
max and AUC, LDL-C reduction is similar whether atorvastatin is given with or without food. Plasma atorvastatin concentrations are lower (approximately 30% for C
max and AUC) following evening drug administration compared with morning. However, LDL-C reduction is the same regardless of the time of day of drug administration
[see Dosage and Administration (2)].
DistributionMean volume of distribution of atorvastatin is approximately 381 liters. Atorvastatin is ≥98% bound to plasma proteins. A blood/plasma ratio of approximately 0.25 indicates poor drug penetration into red blood cells. Based on observations in rats, atorvastatin is likely to be secreted in human milk
[see Contraindications (4) and Use in Specific Populations (8.2)].
MetabolismAtorvastatin is extensively metabolized to ortho- and parahydroxylated derivatives and various beta-oxidation products.
In vitro inhibition of HMG-CoA reductase by ortho- and parahydroxylated metabolites is equivalent to that of atorvastatin. Approximately 70% of circulating inhibitory activity for HMG-CoA reductase is attributed to active metabolites.
In vitro studies suggest the importance of atorvastatin metabolism by cytochrome P450 3A4, consistent with increased plasma concentrations of atorvastatin in humans following co-administration with erythromycin, a known inhibitor of this isozyme
[see Drug Interactions (7.1)]. In animals, the ortho-hydroxy metabolite undergoes further glucuronidation.
ExcretionAtorvastatin and its metabolites are eliminated primarily in bile following hepatic and/or extra-hepatic metabolism; however, the drug does not appear to undergo enterohepatic recirculation. Mean plasma elimination half-life of atorvastatin in humans is approximately 14 hours, but the half-life of inhibitory activity for HMG-CoA reductase is 20 to 30 hours due to the contribution of active metabolites. Less than 2% of a dose of atorvastatin is recovered in urine following oral administration.Specific Populations
GeriatricPlasma concentrations of atorvastatin are higher (approximately 40% for C
max and 30% for AUC) in healthy elderly subjects (age ≥65 years) than in young adults. Clinical data suggest a greater degree of LDL-lowering at any dose of drug in the elderly patient population compared to younger adults
[see Use in Specific Populations (8.5)].
PediatricApparent oral clearance of atorvastatin in pediatric subjects appeared similar to that of adults when scaled allometrically by body weight as the body weight was the only significant covariate in atorvastatin population PK model with data including pediatric HeFH patients (ages 10 years to 17 years of age, n=29) in an open-label, 8-week study. GenderPlasma concentrations of atorvastatin in women differ from those in men (approximately 20% higher for C
max and 10% lower for AUC); however, there is no clinically significant difference in LDL-C reduction with atorvastatin between men and women.
Renal ImpairmentRenal disease has no influence on the plasma concentrations or LDL-C reduction of atorvastatin; thus, dose adjustment in patients with renal dysfunction is not necessary
[see Dosage and Administration (2.5) and
Warnings and Precautions (5.1)].
HemodialysisWhile studies have not been conducted in patients with end-stage renal disease, hemodialysis is not expected to significantly enhance clearance of atorvastatin since the drug is extensively bound to plasma proteins. Hepatic ImpairmentIn patients with chronic alcoholic liver disease, plasma concentrations of atorvastatin are markedly increased. C
max and AUC are each 4-fold greater in patients with Childs-Pugh A disease. C
max and AUC are approximately 16-fold and 11-fold increased, respectively, in patients with Childs-Pugh B disease
[see Contraindications (4)].
TABLE 4. Effect of Co-administered Drugs on the Pharmacokinetics of AtorvastatinCo-administered drug and dosing regimenAtorvastatin Dose (mg)Ratio of AUC
&Ratio of C
maxCyclosporine 5.2 mg/kg/day, stable dose
10 mg QD for 28 days 8.69 10.66 #Tipranavir 500 mg BID/ritonavir 200 mg BID, 7 days
10 mg, SD 9.36 8.58 #Telaprevir 750 mg q8h, 10 days
20 mg, SD 7.88 10.60 #, ‡Saquinavir 400 mg BID/ ritonavir 400 mg BID, 15 days
40 mg QD for 4 days 3.93 4.31 #Clarithromycin 500 mg BID, 9 days
80 mg QD for 8 days 4.54 5.38 #Darunavir 300 mg BID/ritonavir 100 mg BID, 9 days
10 mg QD for 4 days 3.45 2.25 #Itraconazole 200 mg QD, 4 days
40 mg SD 3.32 1.20 #Fosamprenavir 700 mg BID/ritonavir 100 mg BID, 14 days
10 mg QD for 4 days 2.53 2.84 #Fosamprenavir 1400 mg BID, 14 days
10 mg QD for 4 days 2.30 4.04 #Nelfinavir 1250 mg BID, 14 days
10 mg QD for 28 days 1.74 2.22 #Grapefruit Juice, 240 mL QD *
40 mg, SD 1.37 1.16 Diltiazem 240 mg QD, 28 days 40 mg, SD 1.51 1.00 Erythromycin 500 mg QID, 7 days 10 mg, SD 1.33 1.38 Amlodipine 10 mg, single dose 80 mg, SD 1.18 0.91 Cimetidine 300 mg QID, 2 weeks 10 mg QD for 2 weeks 1.00 0.89 Colestipol 10 mg BID, 24 weeks 40 mg QD for 8 weeks NA 0.74** Maalox TC
® 30 mL QID, 17 days
10 mg QD for 15 days 0.66 0.67 Efavirenz 600 mg QD, 14 days 10 mg for 3 days 0.59 1.01 #Rifampin 600 mg QD, 7 days (co-administered)
40 mg SD 1.12 2.90 #Rifampin 600 mg QD, 5 days (doses separated)
40 mg SD 0.20 0.60 #Gemfibrozil 600mg BID, 7 days
40mg SD 1.35 1.00 #Fenofibrate 160mg QD, 7 days
40mg SD 1.03 1.02 Boceprevir 800 mg TID, 7 days 40 mg SD 2.32 2.66 & Represents ratio of treatments (co-administered drug plus atorvastatin vs.atorvastatin alone).
# See Sections 5.1 and 7 for clinical significance.
* Greater increases in AUC (ratio of AUC up to 2.5) and/or C
max (ratio of C
max up to 1.71) have been reported with excessive grapefruit consumption (≥ 750 mL to - 1.2 liters per day).
** Ratio based on a single sample taken 8 to 16 h post dose.
† Due to the dual interaction mechanism of rifampin, simultaneous co-administration of atorvastatin with rifampin is recommended, as delayed administration of atorvastatin after administration of rifampin has been associated with a significant reduction in atorvastatin plasma concentrations.
‡ The dose of saquinavir plus ritonavir in this study is not the clinically used dose. The increase in atorvastatin exposure when used clinically is likely to be higher than what was observed in this study. Therefore, caution should be applied and the lowest dose necessary should be used.
TABLE 5. Effect of Atorvastatin on the Pharmacokinetics of Co-administered DrugsAtorvastatinCo-administered drug and dosing regimen Drug/Dose (mg)Ratio of AUC Ratio of C
80 mg QD for 15 days Antipyrine, 600 mg SD 1.03 0.89 80 mg QD for 10 days # Digoxin 0.25 mg QD, 20 days
1.15 1.20 40 mg QD for 22 days Oral contraceptive QD, 2 months
- norethindrone 1 mg
- ethinyl estradiol 35 mcg
10 mg, SD Tipranavir 500 mg BID/ritonavir 200 mg BID, 7 days 1.08 0.96 10 mg QD for 4 days Fosamprenavir 1400 mg BID, 14 days 0.73 0.82 10 mg QD for 4 days Fosamprenavir 700 mg BID/ritonavir 100 mg BID, 14 days 0.99 0.94 # See Section 7 for clinical significance.
13.1 Carcinogenesis, Mutagenesis, Impairment Of Fertility
In a 2-year carcinogenicity study in rats at dose levels of 10, 30, and 100 mg/kg/day, 2 rare tumors were found in muscle in high-dose females: in one, there was a rhabdomyosarcoma and, in another, there was a fibrosarcoma. This dose represents a plasma AUC (0 to 24) value of approximately 16 times the mean human plasma drug exposure after an 80 mg oral dose. A 2-year carcinogenicity study in mice given 100, 200, or 400 mg/kg/day resulted in a significant increase in liver adenomas in high-dose males and liver carcinomas in high-dose females. These findings occurred at plasma AUC (0 to 24) values of approximately 6 times the mean human plasma drug exposure after an 80 mg oral dose. In vitro, atorvastatin was not mutagenic or clastogenic in the following tests with and without metabolic activation: the Ames test with
Salmonella typhimurium and
Escherichia coli, the HGPRT forward mutation assay in Chinese hamster lung cells, and the chromosomal aberration assay in Chinese hamster lung cells. Atorvastatin was negative in the
in vivo mouse micronucleus test.
In female rats, atorvastatin at doses up to 225 mg/kg (56 times the human exposure) did not cause adverse effects on fertility. Studies in male rats performed at doses up to 175 mg/kg (15 times the human exposure) produced no changes in fertility. There was aplasia and aspermia in the epididymis of 2 of 10 rats treated with 100 mg/kg/day of atorvastatin for 3 months (16 times the human AUC at the 80 mg dose); testis weights were significantly lower at 30 and 100 mg/kg and epididymal weight was lower at 100 mg/kg. Male rats given 100 mg/kg/day for 11 weeks prior to mating had decreased sperm motility, spermatid head concentration, and increased abnormal sperm. Atorvastatin caused no adverse effects on semen parameters, or reproductive organ histopathology in dogs given doses of 10, 40, or 120 mg/kg for two years.
14.1 Prevention Of Cardiovascular Disease
In the Anglo-Scandinavian Cardiac Outcomes Trial (ASCOT), the effect of atorvastatin calcium on fatal and non-fatal coronary heart disease was assessed in 10,305 hypertensive patients 40 to 80 years of age (mean of 63 years), without a previous myocardial infarction and with TC levels ≤251 mg/dL (6.5 mmol/L). Additionally, all patients had at least 3 of the following cardiovascular risk factors: male gender (81.1%), age >55 years (84.5%), smoking (33.2%), diabetes (24.3%), history of CHD in a first-degree relative (26%), TC:HDL >6 (14.3%), peripheral vascular disease (5.1%), left ventricular hypertrophy (14.4%), prior cerebrovascular event (9.8%), specific ECG abnormality (14.3%), proteinuria/albuminuria (62.4%). In this double-blind, placebo-controlled study, patients were treated with anti-hypertensive therapy (Goal BP <140/90 mm Hg for non-diabetic patients; <130/80 mm Hg for diabetic patients) and allocated to either atorvastatin calcium 10 mg daily (n=5,168) or placebo (n=5,137), using a covariate adaptive method which took into account the distribution of nine baseline characteristics of patients already enrolled and minimized the imbalance of those characteristics across the groups. Patients were followed for a median duration of 3.3 years.The effect of 10 mg/day of atorvastatin calcium on lipid levels was similar to that seen in previous clinical trials.Atorvastatin calcium significantly reduced the rate of coronary events [either fatal coronary heart disease (46 events in the placebo group vs. 40 events in the atorvastatin calcium group) or non-fatal MI (108 events in the placebo group vs. 60 events in the atorvastatin calcium group)] with a relative risk reduction of 36% [(based on incidences of 1.9% for atorvastatin calcium vs. 3.0% for placebo), p=0.0005 (see Figure 1)]. The risk reduction was consistent regardless of age, smoking status, obesity, or presence of renal dysfunction. The effect of atorvastatin calcium was seen regardless of baseline LDL levels. Due to the small number of events, results for women were inconclusive.Figure 1: Effect of Atorvastatin Calcium 10 mg/day on Cumulative Incidence of Non-Fatal Myocardial Infarction or Coronary Heart Disease Death (in ASCOT-LLA)
Atorvastatin calcium also significantly decreased the relative risk for revascularization procedures by 42% (incidences of 1.4% for atorvastatin calcium and 2.5% for placebo). Although the reduction of fatal and non-fatal strokes did not reach a pre-defined significance level (p=0.01), a favorable trend was observed with a 26% relative risk reduction (incidences of 1.7% for atorvastatin calcium and 2.3% for placebo). There was no significant difference between the treatment groups for death due to cardiovascular causes (p=0.51) or noncardiovascular causes (p=0.17).In the Collaborative Atorvastatin Diabetes Study (CARDS), the effect of atorvastatin calcium on cardiovascular disease (CVD) endpoints was assessed in 2838 subjects (94% white, 68% male), ages 40 to 75 with type 2 diabetes based on WHO criteria, without prior history of cardiovascular disease and with LDL ≤ 160 mg/dL and TG ≤ 600 mg/dL. In addition to diabetes, subjects had 1 or more of the following risk factors: current smoking (23%), hypertension (80%), retinopathy (30%), or microalbuminuria (9%) or macroalbuminuria (3%). No subjects on hemodialysis were enrolled in the study. In this multicenter, placebo-controlled, double-blind clinical trial, subjects were randomly allocated to either atorvastatin calcium 10 mg daily (1429) or placebo (1411) in a 1:1 ratio and were followed for a median duration of 3.9 years. The primary endpoint was the occurrence of any of the major cardiovascular events: myocardial infarction, acute CHD death, unstable angina, coronary revascularization, or stroke. The primary analysis was the time to first occurrence of the primary endpoint.Baseline characteristics of subjects were: mean age of 62 years, mean HbA1c 7.7%; median LDL-C 120 mg/dL; median TC 207 mg/dL; median TG 151 mg/dL; median HDL-C 52 mg/dL.The effect of atorvastatin calcium 10 mg/day on lipid levels was similar to that seen in previous clinical trials.Atorvastatin calcium significantly reduced the rate of major cardiovascular events (primary endpoint events) (83 events in the atorvastatin calcium group vs. 127 events in the placebo group) with a relative risk reduction of 37%, HR 0.63, 95% CI (0.48, 0.83) (p=0.001) (see Figure 2). An effect of atorvastatin calcium was seen regardless of age, sex, or baseline lipid levels.Atorvastatin calcium significantly reduced the risk of stroke by 48% (21 events in the atorvastatin calcium group vs. 39 events in the placebo group), HR 0.52, 95% CI (0.31, 0.89) (p=0.016) and reduced the risk of MI by 42% (38 events in the atorvastatin calcium group vs. 64 events in the placebo group), HR 0.58, 95.1% CI (0.39, 0.86) (p=0.007). There was no significant difference between the treatment groups for angina, revascularization procedures, and acute CHD death.There were 61 deaths in the atorvastatin calcium group vs. 82 deaths in the placebo group (HR 0.73, p=0.059). Figure 2: Effect of Atorvastatin Calcium 10 mg/day on Time to Occurrence of Major Cardiovascular Event (myocardial infarction, acute CHD death, unstable angina, coronary revascularization, or stroke) in CARDS
In the Treating to New Targets Study (TNT), the effect of atorvastatin calcium 80 mg/day vs. atorvastatin calcium 10 mg/day on the reduction in cardiovascular events was assessed in 10,001 subjects (94% white, 81% male, 38% ≥65 years) with clinically evident coronary heart disease who had achieved a target LDL-C level <130 mg/dL after completing an 8-week, open-label, run-in period with atorvastatin calcium 10 mg/day. Subjects were randomly assigned to either 10 mg/day or 80 mg/day of atorvastatin calcium and followed for a median duration of 4.9 years. The primary endpoint was the time-to-first occurrence of any of the following major cardiovascular events (MCVE): death due to CHD, non-fatal myocardial infarction, resuscitated cardiac arrest, and fatal and non-fatal stroke. The mean LDL-C, TC, TG, non-HDL, and HDL cholesterol levels at 12 weeks were 73, 145, 128, 98, and 47 mg/dL during treatment with 80 mg of atorvastatin calcium and 99, 177, 152, 129, and 48 mg/dL during treatment with 10 mg of atorvastatin calcium. Treatment with atorvastatin calcium 80 mg/day significantly reduced the rate of MCVE (434 events in the 80 mg/day group vs. 548 events in the 10 mg/day group) with a relative risk reduction of 22%, HR 0.78, 95% CI (0.69, 0.89), p=0.0002 (see Figure 3 and Table 6). The overall risk reduction was consistent regardless of age (<65, ≥65) or gender. Figure 3: Effect of Atorvastatin Calcium 80 mg/day vs. 10 mg/day on Time to Occurrence of Major Cardiovascular Events (TNT)
TABLE 6. Overview of Efficacy Results in TNTEndpointAtorvastatinAtorvastatin10 mg80 mgHR
(N=5006)(N=4995)PRIMARY ENDPOINTn(%)n(%)First major cardiovascular endpoint548(10.9)434(8.7)0.78 (0.69, 0.89)Components of the Primary EndpointCHD death 127 (2.5) 101 (2.0) 0.80 (0.61, 1.03) Non-fatal, non-procedure related MI 308 (6.2) 243 (4.9) 0.78 (0.66, 0.93) Resuscitated cardiac arrest 26 (0.5) 25 (0.5) 0.96 (0.56, 1.67) Stroke (fatal and non-fatal) 155 (3.1) 117 (2.3) 0.75 (0.59, 0.96) SECONDARY ENDPOINTS*
First CHF with hospitalization 164 (3.3) 122 (2.4) 0.74 (0.59, 0.94) First PVD endpoint 282 (5.6) 275 (5.5) 0.97 (0.83, 1.15) First CABG or other coronary revascularization procedure
904 (18.1) 667 (13.4) 0.72 (0.65, 0.80) First documented angina endpoint
615 (12.3) 545 (10.9) 0.88 (0.79, 0.99) All-cause mortality 282 (5.6) 284 (5.7) 1.01 (0.85, 1.19) Components of All-Cause MortalityCardiovascular death 155 (3.1) 126 (2.5) 0.81 (0.64, 1.03) Noncardiovascular death 127 (2.5) 158 (3.2) 1.25 (0.99, 1.57) Cancer death 75 (1.5) 85 (1.7) 1.13 (0.83, 1.55) Other non-CV death 43 (0.9) 58 (1.2) 1.35 (0.91, 2.00) Suicide, homicide, and other traumatic non-CV death 9 (0.2) 15 (0.3) 1.67 (0.73, 3.82) a Atorvastatin 80 mg: atorvastatin 10 mg
b Component of other secondary endpoints
* Secondary endpoints not included in primary endpoint HR=hazard ratio; CHD=coronary heart disease; CI=confidence interval; MI=myocardial infarction; CHF=congestive heart failure; CV=cardiovascular; PVD=peripheral vascular disease; CABG=coronary artery bypass graft Confidence intervals for the Secondary Endpoints were not adjusted for multiple comparisonsOf the events that comprised the primary efficacy endpoint, treatment with atorvastatin calcium 80 mg/day significantly reduced the rate of non-fatal, non-procedure related MI and fatal and non-fatal stroke, but not CHD death or resuscitated cardiac arrest (Table 6). Of the predefined secondary endpoints, treatment with atorvastatin calcium 80 mg/day significantly reduced the rate of coronary revascularization, angina, and hospitalization for heart failure, but not peripheral vascular disease. The reduction in the rate of CHF with hospitalization was only observed in the 8% of patients with a prior history of CHF. There was no significant difference between the treatment groups for all-cause mortality (Table 6). The proportions of subjects who experienced cardiovascular death, including the components of CHD death and fatal stroke, were numerically smaller in the atorvastatin calcium 80 mg group than in the atorvastatin calcium 10 mg treatment group. The proportions of subjects who experienced noncardiovascular death were numerically larger in the atorvastatin calcium 80 mg group than in the atorvastatin calcium 10 mg treatment group. In the Incremental Decrease in Endpoints Through Aggressive Lipid Lowering Study (IDEAL), treatment with atorvastatin calcium 80 mg/day was compared to treatment with simvastatin 20 to 40 mg/day in 8,888 subjects up to 80 years of age with a history of CHD to assess whether reduction in CV risk could be achieved. Patients were mainly male (81%), white (99%) with an average age of 61.7 years, and an average LDL-C of 121.5 mg/dL at randomization; 76% were on statin therapy. In this prospective, randomized, open-label, blinded endpoint (PROBE) trial with no run-in period, subjects were followed for a median duration of 4.8 years. The mean LDL-C, TC, TG, HDL, and non-HDL cholesterol levels at Week 12 were 78, 145, 115, 45, and 100 mg/dL during treatment with 80 mg of atorvastatin calcium and 105, 179, 142, 47, and 132 mg/dL during treatment with 20 to 40 mg of simvastatin. There was no significant difference between the treatment groups for the primary endpoint, the rate of first major coronary event (fatal CHD, non-fatal MI, and resuscitated cardiac arrest): 411 (9.3%) in the atorvastatin calcium 80 mg/day group vs. 463 (10.4%) in the simvastatin 20 to 40 mg/day group, HR 0.89, 95% CI ( 0.78, 1.01), p=0.07. There were no significant differences between the treatment groups for all-cause mortality: 366 (8.2%) in the atorvastatin calcium 80 mg/day group vs. 374 (8.4%) in the simvastatin 20 to 40 mg/day group. The proportions of subjects who experienced CV or non-CV death were similar for the atorvastatin calcium 80 mg group and the simvastatin 20 to 40 mg group.
14.2 Hyperlipidemia And Mixed Dyslipidemia
Atorvastatin calcium reduces total-C, LDL-C, VLDL-C, apo B, and TG, and increases HDL-C in patients with hyperlipidemia (heterozygous familial and nonfamilial) and mixed dyslipidemia (
Fredrickson Types IIa and IIb). Therapeutic response is seen within 2 weeks, and maximum response is usually achieved within 4 weeks and maintained during chronic therapy.
Atorvastatin calcium is effective in a wide variety of patient populations with hyperlipidemia, with and without hypertriglyceridemia, in men and women, and in the elderly. In two multicenter, placebo-controlled, dose-response studies in patients with hyperlipidemia, atorvastatin calcium given as a single dose over 6 weeks, significantly reduced total-C, LDL-C, apo B, and TG. (Pooled results are provided in Table 7.) TABLE 7. Dose Response in Patients With Primary Hyperlipidemia (Adjusted Mean % Change From Baseline)
Results are pooled from 2 dose-response studies.Dose N TC LDL-C Apo BTG HDL-C Non-HDL-C/
Placebo 2144310-3710 22-29-39-32-196-3420 20-33-43-35-269-4140 21-37-50-42-296-4580 23-45-60-50-375-53In patients with
Fredrickson Types IIa and IIb hyperlipoproteinemia pooled from 24 controlled trials, the median (25
th and 75
th percentile) percent changes from baseline in HDL-C for atorvastatin calcium 10, 20, 40, and 80 mg were 6.4 (-1.4, 14), 8.7 (0, 17), 7.8 (0, 16), and 5.1 (-2.7, 15), respectively. Additionally, analysis of the pooled data demonstrated consistent and significant decreases in total-C, LDL-C, TG, total-C/HDL-C, and LDL-C/HDL-C.
In three multicenter, double-blind studies in patients with hyperlipidemia, atorvastatin calcium was compared to other statins. After randomization, patients were treated for 16 weeks with either atorvastatin calcium 10 mg per day or a fixed dose of the comparative agent (Table 8).TABLE 8. Mean Percentage Change From Baseline at Endpoint (Double-Blind, Randomized, Active-Controlled Trials)Treatment
N Total-C LDL-C Apo B TG HDL-C Non-HDL-C/
Study 1Atorvastatin 10 mg 707 -27
Lovastatin 20 mg 191 -19 -27-20 -6+7-28 95% CI for Diff
-9.2, -6.5 -10.7, -7.1 -10.0, -6.5 -15.2, -7.1 -1.7, 2.0 -11.1, -7.1 Study 2Atorvastatin 10 mg222 -25
b +6 -36
b Pravastatin 20 mg 77 -17 -23 -17 -9 +8 -28 95% CI for Diff
-10.8, -6.1 -14.5, -8.2 -13.4, -7.4 -14.1, -0.7 -4.9, 1.6 -11.5, -4.1 Study 3Atorvastatin 10 mg 132 -29
Simvastatin 10 mg 45 -24 -30-30 -15 +7 -33 95% CI for Diff
1 -8.7, -2.7 -10.1, -2.6 -8.0, -1.1 -15.1, -0.7 -4.3, 3.9 -9.6, -1.9 1 A negative value for the 95% CI for the difference between treatments favors atorvastatin for all except HDL-C, for which a positive value favors atorvastatin. If the range does not include 0, this indicates a statistically significant difference.
a Significantly different from lovastatin, ANCOVA, p ≤0.05
b Significantly different from pravastatin, ANCOVA, p ≤0.05
c Significantly different from simvastatin, ANCOVA, p ≤0.05
The impact on clinical outcomes of the differences in lipid-altering effects between treatments shown in Table 8 is not known. Table 8 does not contain data comparing the effects of atorvastatin 10 mg and higher doses of lovastatin, pravastatin, and simvastatin. The drugs compared in the studies summarized in the table are not necessarily interchangeable.
The response to atorvastatin calcium in 64 patients with isolated hypertriglyceridemia (
Fredrickson Type IV) treated across several clinical trials is shown in the table below (Table 9). For the atorvastatin calcium -treated patients, median (min, max) baseline TG level was 565 (267 to 1502).
TABLE 9. Combined Patients With Isolated Elevated TG: Median (min, max) Percentage Change From BaselinePlacebo
Atorvastatin 10 mg
Atorvastatin 20 mg
Atorvastatin 80 mg
Triglycerides -12.4 (-36.6, 82.7)-41.0 (-76.2, 49.4)-38.7 (-62.7, 29.5)-51.8 (-82.8, 41.3)Total-C -2.3 (-15.5, 24.4)-28.2 (-44.9, -6.8)-34.9 (-49.6, -15.2)-44.4 (-63.5, -3.8)LDL-C 3.6 (-31.3, 31.6)-26.5 (-57.7, 9.8)-30.4 (-53.9, 0.3)-40.5 (-60.6, -13.8)HDL-C 3.8 (-18.6, 13.4)13.8 (-9.7, 61.5)11.0 (-3.2, 25.2)7.5 (-10.8, 37.2)VLDL-C -1.0 (-31.9, 53.2)-48.8 (-85.8, 57.3)-44.6 (-62.2, -10.8)-62.0 (-88.2, 37.6)non-HDL-C -2.8 (-17.6, 30.0)-33.0 (-52.1, -13.3)-42.7 (-53.7, -17.4)-51.5 (-72.9, -4.3)
The results of an open-label crossover study of 16 patients (genotypes: 14 apo E2/E2 and 2 apo E3/E2) with dysbetalipoproteinemia (
Fredrickson Type III) are shown in the table below (Table 10).
TABLE 10. Open-Label Crossover Study of 16 Patients With Dysbetalipoproteinemia (Fredrickson Type III)Median % Change (min, max) Median (min, max) at
Total-C 442 (225, 1320)-37 (-85, 17)-58 (-90, -31)Triglycerides 678 (273, 5990)-39 (-92, -8)-53 (-95, -30)IDL-C + VLDL-C 215 (111, 613)-32 (-76, 9)-63 (-90, -8)non-HDL-C 411 (218, 1272)-43 (-87, -19)-64 (-92, -36)
14.5 Homozygous Familial Hypercholesterolemia
In a study without a concurrent control group, 29 patients ages 6 years to 37 years with HoFH received maximum daily doses of 20 to 80 mg of atorvastatin calcium. The mean LDL-C reduction in this study was 18%. Twenty-five patients with a reduction in LDL-C had a mean response of 20% (range of 7% to 53%, median of 24%); the remaining 4 patients had 7% to 24% increases in LDL-C. Five of the 29 patients had absent LDL-receptor function. Of these, 2 patients also had a portacaval shunt and had no significant reduction in LDL-C. The remaining 3 receptor-negative patients had a mean LDL-C reduction of 22%.
14.6 Heterozygous Familial Hypercholesterolemia In Pediatric Patients
In a double-blind, placebo-controlled study followed by an open-label phase, 187 boys and postmenarchal girls 10 years to 17 years of age (mean age 14.1 years) with heterozygous familial hypercholesterolemia (HeFH) or severe hypercholesterolemia, were randomized to atorvastatin calcium (n=140) or placebo (n=47) for 26 weeks and then all received atorvastatin calcium for 26 weeks. Inclusion in the study required 1) a baseline LDL-C level ≥ 190 mg/dL or 2) a baseline LDL-C level ≥ 160 mg/dL and positive family history of FH or documented premature cardiovascular disease in a first or second-degree relative. The mean baseline LDL-C value was 218.6 mg/dL (range: 138.5 to 385.0 mg/dL) in the atorvastatin calcium group compared to 230.0 mg/dL (range: 160.0 to 324.5 mg/dL) in the placebo group. The dosage of atorvastatin calcium (once daily) was 10 mg for the first 4 weeks and uptitrated to 20 mg if the LDL-C level was > 130 mg/dL. The number of atorvastatin calcium-treated patients who required uptitration to 20 mg after Week 4 during the double-blind phase was 78 (55.7%).Atorvastatin calcium significantly decreased plasma levels of total-C, LDL-C, triglycerides, and apolipoprotein B during the 26-week double-blind phase (see Table 11).TABLE 11. Lipid-altering Effects of Atorvastatin Calcium in Adolescent Boys and Girls with Heterozygous Familial Hypercholesterolemia or Severe Hypercholesterolemia (Mean Percentage Change From Baseline at Endpoint in Intention-to-Treat Population)DOSAGE N Total-C LDL-C HDL-C TG Apolipoprotein B Placebo 47 -1.5 -0.4 -1.9 1.0 0.7 Atorvastatin Calcium Tablets 140 -31.4 -39.6 2.8 -12.0 -34.0 The mean achieved LDL-C value was 130.7 mg/dL (range: 70.0 to 242.0 mg/dL) in the atorvastatin calcium group compared to 228.5 mg/dL (range: 152.0 to 385.0 mg/dL) in the placebo group during the 26-week double-blind phase.The long-term efficacy of atorvastatin calcium therapy in childhood to reduce morbidity and mortality in adulthood has not been established. Additional pediatric use information is approved for Pfizer’s LIPITOR (atorvastatin calcium) tablets. However, due to Pfizer’s marketing exclusivity rights, this drug product is not labeled with that pediatric information.
16 How Supplied/Storage And Handling
Atorvastatin calcium tablets, USP are supplied as white to off-white, oval, biconvex film-coated tablets of atorvastatin calcium containing 10, 20, 40 and 80 mg atorvastatin.10 mg tablets Atorvastatin calcium tablets, USP 10 mg, are available for oral administration as white to off-white, oval, biconvex film-coated tablets, engraved “APO” on one side, “A10” on the other side. Bottles of 30 (NDC 60505-2578-3)Bottles of 90 (NDC 60505-2578-9) Bottles of 500 (NDC 60505-2578-5)Bottles of 1,000 (NDC 60505-2578-8)Bottles of 5,000 (NDC60505-2578-7) Blister of 100 (NDC 60505-2578-0) 20 mg tablets Atorvastatin calcium tablets, USP 20 mg, are available for oral administration as white to off-white, oval, biconvex film-coated tablets, engraved “APO” on one side, “ATV20” on the other side. Bottles of 30 (NDC 60505-2579-3)Bottles of 90 (NDC 60505-2579-9)Bottles of 500 (NDC 60505-2579-5)Bottles of 1,000 (NDC 60505-2579-8)Bottles of 5,000 (NDC 60505-2579-7) Blister of 100 (NDC 60505-2579-0) 40 mg tablets Atorvastatin calcium tablets, USP 40 mg, are available for oral administration as white to off-white, oval, biconvex film-coated tablets, engraved “APO” on one side, “ATV40” on the other side. Bottles of 30 (NDC 60505-2580-3)Bottles of 90 (NDC 60505-2580-9) Bottles of 500 (NDC 60505-2580-5) Bottles of 1,000 (NDC 60505-2580-8)Bottles of 4,000 (NDC 60505-2580-7)Blister of 100 (NDC 60505-2580-0) 80 mg tablets Atorvastatin calcium tablets, USP 80 mg, are available for oral administration as white to off-white, oval, biconvex film-coated tablets, engraved “APO” on one side, “ATV80” on the other side. Bottles of 30 (NDC 60505-2671-3)Bottles of 90 (NDC 60505-2671-9) Bottles of 500 (NDC60505-2671-5)Bottles of 1,000 (NDC 60505-2671-8)Bottles of 2,500 (NDC 60505-2671-7)Blister of 100 (NDC 60505-2672-0) Storage Store at 20°C to 25°C (68°F to 77°F); excursions permitted from 15°C to 30°C (59°F to 86°F) [see USP Controlled Room Temperature].
Dispense in a tight container [see USP].
17 Patient Counseling Information
Advise the patient to read the FDA-approved patient labeling (Patient Information).Patients taking atorvastatin calcium tablets should be advised that cholesterol is a chronic condition and they should adhere to their medication along with their National Cholesterol Education Program (NCEP)-recommended diet, a regular exercise program as appropriate, and periodic testing of a fasting lipid panel to determine goal attainment. Patients should be advised about substances they should not take concomitantly with atorvastatin [see Warnings and Precautions (5.1)]. Patients should also be advised to inform other healthcare professionals prescribing a new medication that they are taking atorvastatin calcium tablets.
17.1 Muscle Pain
All patients starting therapy with atorvastatin calcium tablets should be advised of the risk of myopathy and told to report promptly any unexplained muscle pain, tenderness, or weakness particularly if accompanied by malaise or fever or if these muscle signs or symptoms persist after discontinuing atorvastatin calcium. The risk of this occurring is increased when taking certain types of medication or consuming larger quantities (>1 liter) of grapefruit juice. They should discuss all medication, both prescription and over the counter, with their healthcare professional.
17.2 Liver Enzymes
It is recommended that liver enzyme tests be performed before the initiation of atorvastatin calcium tablets and if signs or symptoms of liver injury occur. All patients treated with atorvastatin calcium tablets should be advised to report promptly any symptoms that may indicate liver injury, including fatigue, anorexia, right upper abdominal discomfort, dark urine, or jaundice.
17.3 Embryofetal Toxicity
Advise females of reproductive potential of the risk to a fetus, to use an effective contraception during treatment and to inform their healthcare provider of a known or suspected pregnancy
[see Contraindications (
4) and Use in Specific Populations (
Advise women not to breastfeed during treatment with atorvastatin calcium tablets
[see Contraindications (
4) and Use in Specific Populations (
All registered trademarks in this document are the property of their respective owners.APOTEX INC.ATORVASTATIN CALCIUM TABLETS, USP
10 mg, 20 mg, 40 mg, and 80 mg
Manufactured By Manufactured ForApotex Inc. Apotex Corp.Toronto, Ontario Weston, FloridaCanada, M9L 1T9 33326 Revised: September 2018Rev. 14
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