Afatinib Tablet, Film Coated
FDA Label NDC 31722-781

Afatinib tablets are indicated for the first-line treatment of patients with metastatic non-small cell lung cancer (NSCLC) whose tumors have non-resistant epidermal growth factor receptor (EGFR) exon 19 deletions or exon 21 (L858R) substitution mutations as detected by an FDA-approved test [see Dosage and Administration (2.1), Clinical Pharmacology (12.1), Clinical Studies (14.1)].
Limitations of Use: The safety and efficacy of afatinib tablets have not been established in patients whose tumors have resistant EGFR mutations [ see Clinical Studies (14.1)].

Afatinib tablets are indicated for the treatment of patients with metastatic squamous NSCLC progressing after platinum-based chemotherapy.

Select patients for first-line treatment of metastatic NSCLC with afatinib tablets based on the presence of non-resistant EGFR mutations in tumor specimens [ see Clinical Pharmacology ( 12.1), Clinical Studies ( 14.1)]. Information on FDA-approved tests for the detection of EGFR mutations in NSCLC is available at: http://www.fda.gov/CompanionDiagnostics.

The recommended dosage of afatinib tablets is 40 mg orally once daily until disease progression or no longer tolerated by the patient.
Take afatinib tablets at least 1 hour before or 2 hours after a meal. 
Do not take a missed dose within 12 hours of the next dose.

Withhold afatinib tablets for: 
• Grade* 3 or higher adverse reactions 
• Diarrhea of Grade 2 persisting for 2 or more consecutive days while taking anti-diarrheal medication [ see Warnings and Precautions ( 5.1) ] 
• Cutaneous reactions of Grade 2 that are prolonged (lasting more than 7 days) or intolerable [ see Warnings and Precautions ( 5.2) ] 
*National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE), v 3.0 
Resume treatment when the adverse reaction fully resolves, returns to baseline, or improves to Grade 1. Reinstitute afatinib tablets at a reduced dose, i.e., 10 mg per day less than the dose at which the adverse reaction occurred.
Permanently discontinue afatinib tablets for: 
• Life-threatening bullous, blistering, or exfoliating skin lesions [ see Warnings and Precautions ( 5.2) ] 
• Confirmed interstitial lung disease (ILD) [ see Warnings and Precautions ( 5.3) ] 
• Severe drug-induced hepatic impairment [ see Warnings and Precautions ( 5.4) ]
• Gastrointestinal perforation [ see Warnings and Precautions ( 5.5) ] 
• Persistent ulcerative keratitis [ see Warnings and Precautions ( 5.6) ] 
• Symptomatic left ventricular dysfunction [ see Adverse Reactions ( 6.1) ] 
• Severe or intolerable adverse reaction occurring at a dose of 20 mg per day 

   

The recommended dosage of afatinib tablets in patients with pre-existing severe renal impairment (estimated glomerular filtration rate [eGFR*] 15 to 29 mL/min/1.73 m2) is 30 mg orally once daily [ see Use in Specific Populations ( 8.6), Clinical Pharmacology ( 12.3) ]. 
*Use the Modification of Diet in Renal Disease [MDRD] formula to estimate eGFR.

P-glycoprotein Inhibitors 
Reduce afatinib tablets daily dose by 10 mg if not tolerated for patients who require therapy with a P-glycoprotein (P-gp) inhibitor. Resume the previous dose after discontinuation of the P-gp inhibitor as tolerated [ see Drug Interactions ( 7), Clinical Pharmacology ( 12.3) ]. 
P-glycoprotein Inducers
Increase afatinib tablets daily dose by 10 mg as tolerated for patients who require chronic therapy with a P-gp inducer. Resume the previous dose 2 to 3 days after discontinuation of the P-gp inducer [ see Drug Interactions ( 7), Clinical Pharmacology ( 12.3) ].

• Afatinib tablets, 40 mg are white to off white, round, biconvex, bevel-edged, film-coated tablets debossed with “A40” on one side and “H” on the other side. 
• Afatinib tablets, 30 mg are white to off white, round, biconvex, bevel-edged, film-coated tablets debossed with “A30” on one side and “H” on the other side.
• Afatinib tablets, 20 mg are white to off white, round, biconvex, bevel-edged, film-coated tablets debossed with “A20” on one side and “H” on the other side.

None.

Diarrhea has resulted in dehydration with or without renal impairment across the clinical experience; some cases were fatal. Grade 3 to 4 diarrhea occurred in 697 (16%) of the 4257 patients who received afatinib across 44 clinical trials. In LUX-Lung 3, diarrhea occurred in 96% of patients treated with afatinib (n=229), of which 15% were Grade 3 in severity and occurred within the first 6 weeks. Renal impairment as a consequence of diarrhea occurred in 6% of patients treated with afatinib, of which 1.3% were Grade 3. In LUX-Lung 8, diarrhea occurred in 75% of patients treated with afatinib  (n=392), of which 10% were Grade 3 in severity and 0.8% were Grade 4 in severity. Renal impairment as a consequence of diarrhea occurred in 7% of patients treated with afatinib, of which 2% were Grade 3 [ see Adverse Reactions ( 6.1) ].
For patients who develop prolonged Grade 2 diarrhea lasting more than 48 hours or greater than or equal to Grade 3 diarrhea, withhold afatinib until diarrhea resolves to Grade 1 or less and resume afatinib with appropriate dose reduction [ see Dosage and Administration ( 2.3) ]. Provide patients with an anti-diarrheal agent (e.g., loperamide) for self-administration at the onset of diarrhea and instruct patients to continue anti-diarrheal therapy until loose bowel movements cease for 12 hours.

Grade 3 cutaneous reactions characterized by bullous, blistering, and exfoliating skin lesions, occurred in 0.2% of the 4257 patients who received afatinib across clinical trials. In LUX-Lung 3, the overall incidence of cutaneous reactions consisting of rash, erythema, and acneiform rash was 90%, and the incidence of Grade 3 cutaneous reactions was 16%. In addition, the incidence of Grade 1 to 3 palmar-plantar erythrodysesthesia syndrome was 7%. In LUX-Lung 8, the overall incidence of cutaneous reactions consisting of rash, erythema, and acneiform rash was 70%, and the incidence of Grade 3 cutaneous reactions was 7%. In addition, the incidence of Grade 1 to 3 palmar-plantar erythrodysesthesia syndrome was 1.5% [see Adverse Reactions ( 6.1)]. 
Discontinue afatinib in patients who develop life-threatening bullous, blistering, or exfoliating skin lesions. For patients who develop prolonged Grade 2 cutaneous adverse reactions lasting more than 7 days, intolerable Grade 2 cutaneous reactions, or Grade 3 cutaneous reactions, withhold afatinib until the adverse reaction resolves to Grade 1 or less and resume afatinib with appropriate dose reduction [see Dosage and Administration ( 2.3)]. 
Postmarketing cases consistent with toxic epidermal necrolysis (TEN) and Stevens Johnson syndrome (SJS) have been reported in patients receiving afatinib. The cases of TEN and SJS bullous skin reactions result from a distinct and separate mechanism of toxicity than the bullous skin lesions secondary to the pharmacologic action of the drug on the epidermal growth factor receptor. Discontinue afatinib if TEN or SJS is suspected [see Dosage and Administration ( 2.3)].

Interstitial lung disease or ILD-like adverse reactions (e.g., lung infiltration, pneumonitis, acute respiratory distress syndrome, or alveolitis allergic) occurred in 1.6% of the 4257 patients who received afatinib across clinical trials; of these, 0.4% were fatal. The incidence of ILD appeared to be higher in Asian patients (2.3%; 38/1657) as compared to Whites (1.0%; 23/2241). In LUX-Lung 3, the incidence of Grade ≥3 ILD was 1.3% and resulted in death in 1% of afatinib-treated patients. In LUX-Lung 8, the incidence of Grade ≥3 ILD was 0.9% and resulted in death in 0.8% of afatinib-treated patients.
Withhold afatinib during evaluation of patients with suspected ILD and discontinue afatinib in patients with confirmed ILD [see Dosage and Administration ( 2.3)].

In 4257 patients who received afatinib across clinical trials, 9.7% had liver test abnormalities, of which 0.2% were fatal. In LUX-Lung 3, liver test abnormalities of any grade occurred in 17.5% of the patients treated with afatinib, of which 3.5% had Grade 3 to 4 liver test abnormalities. In LUX-Lung 8, liver test abnormalities of any grade occurred in 6% of the patients treated with afatinib , of which 0.2% had Grade 3 to 4 liver test abnormalities.
Obtain periodic liver testing in patients during treatment with afatinib. Withhold afatinib in patients who develop worsening of liver function [see Dosage and Administration ( 2.3)] . In patients who develop severe hepatic impairment while taking afatinib, discontinue treatment.  

Gastrointestinal perforation, including fatal cases, has occurred with afatinib. Gastrointestinal perforation has been reported in 0.2% of patients treated with afatinib among 3213 patients across 17 randomized controlled clinical trials. Patients receiving concomitant corticosteroids, nonsteroidal anti-inflammatory drugs (NSAIDs) or anti-angiogenic agents, or patients with increasing age or who have an underlying history of gastrointestinal ulceration, underlying diverticular disease or bowel metastases may be at increased risk of perforation.
Permanently discontinue afatinib in patients who develop gastrointestinal perforation [see Dosage and Administration ( 2.3)].

Keratitis, characterized as acute or worsening eye inflammation, lacrimation, light sensitivity, blurred vision, eye pain, and/or red eye occurred in 0.7% of patients treated with afatinib among 4257 patients across clinical trials, of which 0.05% of patients experienced Grade 3 keratitis. Keratitis was reported in 2.2% patients in LUX-Lung 3, with Grade 3 in 0.4%. In LUX-Lung 8, keratitis was reported in 0.3% patients; there were no patients with ≥Grade 3 keratitis. 
Withhold afatinib during evaluation of patients with suspected keratitis, and if diagnosis of ulcerative keratitis is confirmed, interrupt or discontinue afatinib [see Dosage and Administration ( 2.3)] . If keratitis is diagnosed, the benefits and risks of continuing treatment should be carefully considered. Afatinib should be used with caution in patients with a history of keratitis, ulcerative keratitis, or severe dry eye [see Adverse Reactions ( 6.1)] . Contact lens use is also a risk factor for keratitis and ulceration. 

Based on findings from animal studies and its mechanism of action, afatinib can cause fetal harm when administered to a pregnant woman. Administration of afatinib to pregnant rabbits during organogenesis at exposures approximately 0.2 times the exposure in humans at the recommended dose of 40 mg daily resulted in embryotoxicity and, in rabbits showing maternal toxicity, increased abortions at late gestational stages. Advise pregnant women and females of reproductive potential of the potential risk to a fetus. Advise females of reproductive potential to use effective contraception during treatment and for at least 2 weeks after the last dose of afatinib [see Use in Specific Populations ( 8.1, 8.3)].

The following clinically significant adverse reactions are described elsewhere in the labeling: 
• Diarrhea [see Warnings and Precautions ( 5.1) ] 
• Bullous and Exfoliative Skin Disorders [ see Warnings and Precautions ( 5.2) ] 
• Interstitial Lung Disease [ see Warnings and Precautions ( 5.3) ] 
• Hepatic Toxicity [ see Warnings and Precautions ( 5.4) ] 
• Gastrointestinal Perforation [ see Warnings and Precautions ( 5.5) ] 
• Keratitis [ see Warnings and Precautions ( 5.6) ] 

Because clinical trials are conducted under widely varying conditions, 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 practice.
The data in the Warnings and Precautions section reflect exposure to afatinib for clinically significant adverse reactions in 4257 patients enrolled in LUX-Lung 3 (n=229) and LUX-Lung 8 (n=392), and 3636 patients with cancer enrolled in 42 studies of afatinib administered alone or in combination with other anti-neoplastic drugs at afatinib doses ranging from 10 to 70 mg daily or at doses 10 to 160 mg in other regimens. The mean exposure was 5.5 months. The population included patients with various cancers, the most common of which were NSCLC, breast, colorectal, brain, and head and neck.
The data described below reflect exposure to afatinib as a single agent in LUX-Lung 3, a randomized, active-controlled trial conducted in patients with EGFR mutation-positive, metastatic NSCLC, and in LUX-Lung 8, a randomized, active-controlled trial in patients with metastatic squamous NSCLC progressing after platinum-based chemotherapy.
EGFR Mutation-Positive Metastatic NSCLC
The safety of afatinib was evaluated in 229 EGFR-tyrosine kinase inhibitor-naïve patients with EGFR mutation-positive, metastatic non-squamous NSCLC enrolled in a randomized (2:1), multicenter, open-label trial (LUX-Lung 3). Patients received either afatinib 40 mg daily until documented disease progression or intolerance to the therapy or pemetrexed 500 mg/m² followed after 30 minutes by cisplatin 75 mg/m² every three weeks for a maximum of six treatment courses. The median exposure was 11 months for patients treated with afatinib and 3.4 months for patients treated with pemetrexed/cisplatin.
The overall trial population had a median age of 61 years; 61% of patients in the afatinib arm and 60% of patients in the pemetrexed/cisplatin arm were younger than 65 years. A total of 64% of patients on afatinib and 67% of pemetrexed/cisplatin patients were female. More than two-thirds of patients were from Asia (afatinib 70%; pemetrexed/cisplatin 72%).
Serious adverse reactions were reported in 29% of patients treated with afatinib. The most frequent serious adverse reactions reported in patients treated with afatinib were diarrhea (6.6%); vomiting (4.8%); and dyspnea, fatigue, and hypokalemia (1.7% each). Fatal adverse reactions in afatinib-treated patients in LUX-Lung 3 included pulmonary toxicity/ILD-like adverse reactions (1.3%), sepsis (0.43%), and pneumonia (0.43%).
Dose reductions due to adverse reactions were required in 57% of afatinib-treated patients. The most frequent adverse reactions that led to dose reduction in the patients treated with afatinib were diarrhea (20%), rash/acne (19%), paronychia (14%), and stomatitis (10%). Discontinuation of therapy in afatinib-treated patients for adverse reactions was 14.0%. The most frequent adverse reactions that led to discontinuation in afatinib-treated patients were diarrhea (1.3%), ILD (0.9%), and paronychia (0.9%).
Clinical trials of afatinib excluded patients with an abnormal left ventricular ejection fraction (LVEF), i.e., below the institutional lower limit of normal. In LUX-Lung 3, all patients were evaluated for LVEF at screening and every 9 weeks thereafter in the afatinib-treated group and as needed in the pemetrexed/cisplatin group. More afatinib-treated patients (2.2%; n=5) experienced ventricular dysfunction (defined as diastolic dysfunction, left ventricular dysfunction, or ventricular dilation; all < Grade 3) compared to chemotherapy-treated patients (0.9%; n=1).
Tables 1 and 2 summarize common adverse reactions and laboratory abnormalities in LUX-Lung 3.
Table 1 Adverse Reactions Reported in ≥10% of Afatinib-Treated Patients in LUX-Lung 3*

*NCI CTCAE v 3.0
†None of the adverse reactions in this table except stomatitis (one patient on afatinib [0.4%]) were Grade 4 in severity.
1Includes stomatitis, aphthous stomatitis, mucosal inflammation, mouth ulceration, oral mucosa erosion, mucosal erosion, mucosal ulceration
2Includes acne, acne pustular, dermatitis, acneiform dermatitis, dermatosis, drug eruption, erythema, exfoliative rash, folliculitis, rash, rash erythematous, rash follicular, rash generalized, rash macular, rash maculo-papular, rash pruritic, rash pustular, skin disorder, skin erosion, skin exfoliation, skin fissures, skin lesion, skin reaction, skin toxicity, skin ulcer
3Includes paronychia, nail infection, nail bed infection
Other clinically important adverse reactions observed in patients treated with afatinib but that occurred at a higher incidence in pemetrexed/cisplatin-treated patients and not listed elsewhere in section 6 include: decreased appetite (29% Grades 1 to 4, 4% Grade 3), nausea (25% Grades 1 to 4, 4% Grade 3), and vomiting (23% Grades 1 to 4, 4% Grade 3).
Table 2 Laboratory Abnormalities Occurring in ≥10% of Afatinib Arm and at ≥2% Higher Incidence than in Chemotherapy Arm in LUX-Lung 3*

*NCI CTCAE v 3.0
Previously Treated, Metastatic Squamous NSCLC
The safety of afatinib was evaluated in 392 afatinib-treated patients with metastatic squamous NSCLC enrolled in a randomized, multicenter, open-label trial (LUX-Lung 8). Patients were required to have received at least four cycles of platinum-based chemotherapy, ECOG Performance Status (PS) 0 or 1, and normal left ventricular ejection fraction (LVEF). Patients received afatinib 40 mg once daily (n=392) or erlotinib 150 mg once daily (n=395). Treatment continued until documented disease progression or intolerance to the therapy. The median exposure was 2.1 months for patients treated with afatinib, 15% were exposed for at least 6
months, and 5% were exposed for at least 12 months.
Among the 392 afatinib -treated patients, the median age was 65 years, 53% were 65 years of age or older, 84% were male, 72% were White, 25% were Asian, ECOG PS 0 (32%) or 1 (68%).
Serious adverse reactions occurred in 44% of patients treated with afatinib. The most frequent serious adverse reactions in patients treated with afatinib were pneumonia (6.6%), diarrhea (4.6%), and dehydration and dyspnea (3.1% each). Fatal adverse reactions in afatinib-treated patients included ILD (0.5%), pneumonia (0.3%), respiratory failure (0.3%), acute renal failure (0.3%), and general physical health deterioration (0.3%).
The most frequent adverse reactions that led to discontinuation in afatinib-treated patients were diarrhea (4.1%) and rash/acne (2.6%).
Dose reductions due to adverse reactions were required in 27% of afatinib-treated patients and discontinuation of afatinib for adverse reactions was required for 20%. The most frequent adverse reactions that led to dose reduction in the patients treated with afatinib were diarrhea (15%), rash/acne (5.9%), and stomatitis (3.1%).
Tables 3 and 4 summarize common adverse reactions and laboratory abnormalities in LUX-Lung 8.
Table 3 Adverse Reactions Reported in ≥10% of Afatinib -Treated Patients in LUX-Lung 8*

*NCI CTCAE v 3.0
¹ Includes stomatitis, aphthous stomatitis, mucosal inflammation, mouth ulceration, oral mucosa erosion, mucosal erosion, mucosal ulceration
² Includes acne, dermatitis, acneiform dermatitis, eczema, erythema, exfoliative rash, folliculitis, rash, rash generalized, rash macular, rash maculo-papular, rash pruritic, rash pustular, skin exfoliation, skin fissures, skin lesion, skin reaction, skin toxicity, skin ulcer
³ Includes paronychia, nail infection, nail bed infection
Table 4 Laboratory Abnormalities Occurring in ≥10% of Afatinib Arm and at ≥2% Higher Incidence than in Erlotinib Arm in LUX-Lung 8*

*NCI CTCAE v 3.0
Other clinically important laboratory abnormalities observed in patients treated with afatinib that are not listed in Table 4 are: increased alanine aminotransferase (10% Grade 1 to 4; 1% Grade 3 to 4), increased aspartate aminotransferase (7% Grade 1 to 4; 1% Grade 3 to 4), and increased bilirubin (3% Grade 1 to 4; 0 Grade 3 to 4).
Less Common Adverse Reactions
Other adverse reactions reported in patients treated with afatinib in LUX-Lung 3 and LUX-Lung 8 include:
Skin and subcutaneous disorders: nail disorders occurred in 9.2% and 2.8% of patients, respectively.

The following adverse reactions have been identified during postapproval use of afatinib. 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. 
• Pancreatitis 
• Toxic epidermal necrolysis/Stevens Johnson syndrome 

Effect of P-glycoprotein (P-gp) Inhibitors and Inducers 
Concomitant taking of P-gp inhibitors (including but not limited to ritonavir, cyclosporine A, ketoconazole, itraconazole, erythromycin, verapamil, quinidine, tacrolimus, nelfinavir, saquinavir, and amiodarone) with afatinib can increase exposure to afatinib [ see Clinical Pharmacology ( 12.3) ]. Reduce afatinib daily dose as recommended [ see Dosage and Administration ( 2.5) ].
Concomitant taking of P-gp inducers (including but not limited to rifampicin, carbamazepine, phenytoin, phenobarbital, and St. John’s wort) with afatinib can decrease exposure to afatinib [see Clinical Pharmacology ( 12.3) ]. Increase afatinib daily dose as recommended [s ee Dosage and Administration ( 2.5) ]. 

Risk Summary 
Based on findings from animal studies and its mechanism of action [ see Clinical Pharmacology ( 12.1) ], afatinib can cause fetal harm when administered to a pregnant woman. There are no available data on the use of afatinib in pregnant women. Administration of afatinib to pregnant rabbits during organogenesis at exposures approximately 0.2 times the exposure in humans at the recommended dose of 40 mg daily resulted in embryotoxicity and, in rabbits showing maternal toxicity, increased abortions at late gestational stages ( see Data). Advise a pregnant woman of the potential risk to a fetus. 
The 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 
Animal Data 
In an embryo-fetal development study in rabbits, administration of afatinib to pregnant animals at doses of 5 mg/kg (approximately 0.2 times the exposure by AUC at the recommended human dose of 40 mg daily) or greater during the period of organogenesis caused increased post-implantation loss, and in animals showing maternal toxicity, abortion at late gestational stages. In the same study, at the high dose level of 10 mg/kg (approximately 0.7 times the exposure by AUC at the recommended human dose of 40 mg daily), there were reduced fetal weights, and increases in the incidence of runts, as well as visceral and dermal variations. In an embryo-fetal development study in rats, there were skeletal alterations consisting of incomplete or delayed ossifications and reduced fetal weight at a dose of 16 mg/kg (approximately twice the exposure based on AUC at the recommended human dose of 40 mg daily).

Risk Summary
There are no data on the presence of afatinib in human milk or its effects on the breastfed infant or on milk production. Afatinib was present in the milk of lactating rats ( see Data). Because of the potential for serious adverse reactions in breastfed infants from afatinib, advise women not to breastfeed during treatment with afatinib and for 2 weeks after the final dose. 
Data
Afatinib was present in the milk of lactating rats at concentrations 80 and 150 times higher than those found in plasma at 1 and 6 hours after administration.

Contraception
Females
Afatinib can cause fetal harm when administered to a pregnant woman. Advise females of reproductive potential to use effective contraception during treatment with afatinib and for at least 2 weeks after the last dose of afatinib [ see Use in Specific Populations ( 8.1), Clinical Pharmacology ( 12.3) ]. 
Infertility 
Based on results from an animal fertility study, afatinib may reduce fertility in females and males of reproductive potential. It is not known if the effects on fertility are reversible [ see Nonclinical Toxicology ( 13.1) ].

Safety and effectiveness of afatinib in pediatric patients have not been established.
The safety and efficacy of afatinib were assessed, but not established, in a single-arm, open-label, multicentre trial [NCT02372006] which included 37 pediatric patients 2 to <17 years of age with recurrent/refractory solid tumors with known ErbB pathway deregulation who received 80% of the adult dose per body surface area. No new safety signals were observed in pediatric patients in this trial. In these 37 patients, the pharmacokinetic parameters were within range of values in adults.
 

Patients with severe renal impairment have a higher exposure to afatinib than patients with normal renal function. Administer afatinib at a starting dose of 30 mg once daily in patients with severe renal impairment (eGFR 15 to 29 mL/min/1.73 m ²as determined by Modification of Diet in Renal Disease formula) [see Dosage and Administration ( 2.4), Clinical Pharmacology ( 12.3) ]. Adjustments to the starting dose of afatinib are not necessary in patients with mild or moderate renal impairment (eGFR 30 to 89 mL/min /1.73 m ²). 
Afatinib has not been studied in patients with eGFR <15 mL/min/1.73 m ²or on dialysis.

LUX-Lung 3 did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects.
In LUX-Lung 8, 53% of the 398 patients randomized to receive afatinib were 65 years of age or older and 11% were 75 years or older. In an exploratory subgroup analysis of LUX-Lung 8, the hazard ratio for overall survival (OS) in patients less than 65 years old was 0.68 (95% CI: 0.55, 0.85) and in patients 65 years or older was 0.95 (95% CI: 0.76, 1.19). No overall differences in safety were observed between patients 65 years and older and younger patients. 

Afatinib has not been studied in patients with severe (Child Pugh C) hepatic impairment. Adjustments to the starting dose of afatinib are not necessary in patients with mild (Child Pugh A) or moderate (Child Pugh B) hepatic impairment [ see Clinical Pharmacology ( 12.3) ]. Closely monitor patients with severe hepatic impairment and adjust afatinib dose if not tolerated.

Overdose was reported in 2 healthy adolescents each of whom ingested 360 mg of afatinib (as part of a mixed-drug ingestion) resulting in nausea, vomiting, asthenia, dizziness, headache, abdominal pain, and elevated amylase [<1.5 times upper limit of normal (ULN)]. Both subjects recovered.

Afatinib tablets contain afatinib, a tyrosine kinase inhibitor which is a 4-anilinoquinazoline. Afatinib is presented as the dimaleate salt, with the chemical name 2-butenamide, N-[4-[(3-chloro-4-fluorophenyl)amino]-7-[[(3S)-tetrahydro-3-furanyl]oxy]-6-quinazolinyl]-4-(dimethylamino)-,(2E)-,(2Z)-2-butenedioate(1:2). Its structural formula is:

Afatinibstructure (Afatinibstructure)

Afatinib dimaleate is an off-white to yellow color, hygroscopic powder, slightly soluble in dimethyl sulfoxide, dimethylformamide and very slightly soluble in water, with an empirical formula of C ₂₄H ₂₅ClFN ₅O ₃.2C ₄H ₄O ₄(1:2), and a relative molecular mass of 718.09. 
Afatinib tablets for oral administration are available in 40 mg, 30 mg, or 20 mg of afatinib (equivalent to 59.12 mg, 44.34 mg, or 29.56 mg afatinib dimaleate, respectively). The inactive ingredients of afatinib tablets are the following: Tablet Core: colloidal silicon dioxide, crospovidone, lactose monohydrate, magnesium stearate, microcrystalline cellulose and Coating: hypromellose, polyethylene glycol, polysorbate 80, talc and titanium dioxide.

Afatinib covalently binds to the kinase domains of EGFR (ErbB1), HER2 (ErbB2), and HER4 (ErbB4) and irreversibly inhibits tyrosine kinase autophosphorylation, resulting in downregulation of ErbB signaling. Certain mutations in EGFR, including non-resistant mutations in its kinase domain, can result in increased autophosphorylation of the receptor, leading to receptor activation, sometimes in the absence of ligand binding, and can support cell proliferation in NSCLC. Non-resistant mutations are defined as those occurring in exons constituting the kinase domain of EGFR that lead to increased receptor activation and where efficacy is predicted by 1) clinically meaningful tumor shrinkage with the recommended dose of afatinib and/or 2) inhibition of cellular proliferation or EGFR tyrosine kinase phosphorylation at concentrations of afatinib sustainable at the recommended dosage according to validated methods. The most commonly found of these mutations are exon 21 L858R substitutions and exon 19 deletions. 
Afatinib demonstrated inhibition of autophosphorylation and/or in vitroproliferation of cell lines expressing wild-type EGFR and in those expressing selected EGFR exon 19 deletion mutations, exon 21 L858R mutations, or other less common non-resistant mutations, at afatinib concentrations achieved in patients. In addition, afatinib inhibited in vitroproliferation of cell lines overexpressing HER2. 
Treatment with afatinib resulted in inhibition of tumor growth in nude mice implanted with tumors either overexpressing wild type EGFR or HER2 or in an EGFR L858R/T790M double mutant model.

Cardiac Electrophysiology
The effect of multiple doses of afatinib (50 mg once daily) on the QTc interval was evaluated in an open-label, single-arm study in patients with relapsed or refractory solid tumors. No large changes in the mean QTc interval (i.e., >20 ms) were detected in the study.

Absorption 
Following oral administration of afatinib tablets, time to peak afatinib plasma concentrations (T _max) is 2 to 5 hours. Maximum concentration (C _max) and area under the concentration-time curve from time zero to infinity (AUC _{0 to INF}) values increased slightly more than dose proportional in the range of 20 to 50 mg. The geometric mean relative bioavailability of 20 mg afatinib tablets was 92% as compared to an oral solution. Steady-state plasma concentrations are achieved within 8 days of repeat dosing of afatinib resulting in an accumulation of 2.8-fold for AUC and 2.1-fold for C _max.
Effect of Food 
A high-fat meal decreased C _maxby 50% and AUC _{0 to INF}by 39% relative to the fasted condition [ see Dosage and Administration ( 2.2) ].
Distribution 
In vitrobinding of afatinib to human plasma proteins is approximately 95%.
Elimination
The elimination half-life of afatinib is 37 hours after repeat dosing in cancer patients.
Metabolism 
Covalent adducts to proteins are the major circulating metabolites of afatinib and enzymatic metabolism of afatinib is minimal. The metabolites formed by CYP450-dependent reactions were approximately 9% of the total metabolic turnover in sandwich-cultured human hepatocytes. Approximately 2% of the afatinib dose was metabolized by FMO3; the CYP3A4-dependent N-demethylation was not detected. 
Excretion
In humans, excretion of afatinib is primarily via the feces (85%) with 4% recovered in the urine following a single oral dose of [ ¹⁴C]-labeled afatinib solution. The parent compound accounted for 88% of the recovered dose.
Specific Populations 
Based on the population pharmacokinetic analysis, weight, gender, age, and race do not have a clinically important effect on exposure of afatinib. 
Patients with Renal Impairment
A pharmacokinetic study was conducted in 14 subjects with normal (eGFR ≥90 mL/min/1.73 m ²) renal function, 8 subjects with moderate (eGFR 30 to 59 mL/min/1.73 m ²) and 8 subjects with severe (eGFR 15 to 29 mL/min/1.73 m ²) renal impairment. All subjects received a single 40 mg oral dose of afatinib. The geometric mean AUC _INFfor afatinib was 50% higher in subjects with severe renal impairment and was 22% higher in subjects with moderate renal impairment as compared to subjects with normal renal function. Geometric mean C _maxwas 22% higher in subjects with severe renal impairment and was comparable in subjects with moderate renal impairment to subjects with normal renal function [ see Dosage and Administration ( 2.4) , Use in Specific Populations ( 8.6) ]. Afatinib has not been studied in patients with eGFR <15 mL/min/1.73 m ²or on dialysis. 
Patients with Hepatic Impairment
Mild (Child Pugh A) or moderate (Child Pugh B) hepatic impairment had no influence on the afatinib exposure following a single dose of afatinib. Subjects with severe (Child Pugh C) hepatic impairment have not been studied [see Use in Specific Populations ( 8.7) ].
Drug Interactions Studies
Clincial Studies 
Effect of P-gp Inhibitors and Inducers on Afatinib: The effect of ritonavir dosing time relative to a single oral dose of afatinib was evaluated in healthy subjects taking 40 mg of afatinib alone as compared to those after ritonavir (200 mg twice daily for 3 days) co-administration at 6 hours after afatinib administration. The relative bioavailability for AUC _{0 to INF}and C _maxof afatinib was 119% and 104% when co-administered with ritonavir, and 111% and 105% when ritonavir was administered 6 hours after taking afatinib. In another study, when ritonavir (200 mg twice daily for 3 days) was administered 1 hour before a 20 mg single dose of afatinib, exposure to afatinib increased by 48% for AUC _{0 to INF}and 39% for C _max[ see Drug Interactions ( 7) ]. 
Pre-treatment with a potent inducer of P-gp, rifampicin (600 mg once daily for 7 days) decreased the plasma exposure to afatinib by 34% (AUC _{0 to INF}) and 22% (C _max) [see Drug Interactions ( 7) ]. 
In Vitro Studies
Effect of Afatinib on P-gp: Based on in vitrodata, afatinib is an inhibitor of P-gp.
Interaction of Afatinib with BCRP: Based on in vitrodata, afatinib is a substrate and an inhibitor of the transporter BCRP. 
Effect of Afatinib on CYP450 Enzymes: Afatinib is not an inhibitor or an inducer of CYP450 enzymes (CYP1A2, 2B6, 2C8, 2C9, 2C19, and 3A4) in cultured primary human hepatocytes.

Carcinogenicity studies have not been conducted with afatinib. 
A marginal response to afatinib was observed in a single tester strain of a bacterial (Ames) mutagenicity assay. No mutagenic or genotoxic potential was identified in an in vitrochromosomal aberration test at non-cytotoxic concentrations as well as in the in vivobone marrow micronucleus assay, the in vivoComet assay, and an in vivo4-week oral mutation study in the Muta™ Mouse. 
In a dedicated fertility study, male and female rats received afatinib daily by oral administration at doses of 4, 6, or 8 mg/kg. In males at doses of 6 mg/kg (approximately equal to the exposure by AUC in patients at the recommended human dose of 40 mg daily) or greater, there was an increase in the incidence of low or no sperm count, though overall fertility was not affected; decreases in sperm count were supported by findings of increased apoptosis in the testes and atrophy in the seminal vesicles and the prostate in general toxicology studies. In females at the high dose of        8 mg/kg (approximately 0.63 times the exposure by AUC in patients at the recommended human dose of 40 mg daily), there was a mild decrease in the number of corpora lutea along with a mild increase in post-implantation loss due to early resorptions. In a 4-week general toxicology study, female rats had decreases in ovarian weights at all dose levels; organ weight had not fully recovered by the end of a 2-week recovery period.

The efficacy of afatinib for the first-line treatment of patients with EGFR mutation-positive, metastatic [Stage IV and Stage IIIb with pleural and/or pericardial effusion as classified by the American Joint Commission on Cancer (AJCC, 6th edition)] NSCLC was established in a randomized, multicenter, open-label trial (LUX-Lung 3 [NCT00949650]). Patients were randomized (2:1) to receive afatinib 40 mg orally once daily (n=230) or intravenous pemetrexed (500 mg/m ²) plus cisplatin (75 mg/m ²) once every 21 days for up to 6 cycles (n=115). Randomization was stratified according to EGFR mutation category (exon 19 deletion vs exon 21 L858R vs other) and race (Asian vs non-Asian). The major efficacy outcome was progression-free survival (PFS) as assessed by an independent review committee (IRC). Other efficacy outcomes included overall response rate (ORR) and OS. EGFR mutation status was prospectively determined for screening and enrollment of patients by a clinical trial assay (CTA). Tumor samples from 264 patients (178 randomized to afatinib and 86 patients randomized to chemotherapy) were tested retrospectively by the companion diagnostic therascreen ^®EGFR RGQ PCR Kit, which is FDA-approved for selection of patients for afatinib treatment.
Among the patients randomized, 65% were female, median age was 61 years, baseline ECOG performance status (PS) was 0 (39%) or 1 (61%), 26% were White and 72% were Asian. The majority of the patients had a tumor sample with an EGFR mutation categorized by the CTA as either exon 19 deletion (49%) or exon 21 L858R substitution (40%), while the remaining 11% had other mutations.
A statistically significant improvement in PFS as determined by the IRC was demonstrated for patients randomized to afatinib compared with those randomized to chemotherapy. See Table 5 and Figure 1. There was no statistically significant difference for OS between the treatment arms at the final pre-planned analysis.
Table 5 Efficacy Results in LUX-Lung 3

*Stratified by EGFR mutation status and race. 
HR=hazard ratio; CR=complete response; PR=partial response
Figure 1 Kaplan-Meier Curve for PFS by Independent Review by Treatment Group in LUX-Lung 3

Afatinibfig1 (Afatinibfig1)

Pre-specified exploratory subgroup analyses were conducted according to the stratification factor of EGFR mutation category. See Figure 2 and text below Figure 2.
Figure 2 Forest Plots of PFS and OS by EGFR Mutation Subgroups in LUX-Lung 3

Afatinibfig2 (Afatinibfig2)

Overall Response Rate in Other EGFR Mutations
The efficacy of afatinib in patients with NSCLC harboring non-resistant EGFR mutations (S768I, L861Q, and G719X) other than exon 19 deletions or exon 21 L858R substitutions was evaluated in a pooled analysis of such patients enrolled in one of three clinical trials (LUX-Lung 2 [NCT00525148], LUX-Lung 3 [NCT00949650], and LUX-Lung 6 [NCT01121393]).
•LUX-Lung 2 was a single arm, multicenter study of afatinib 40 or 50 mg orally once daily until disease progression or intolerable side effects. EGFR status was determined by bi-directional Sanger sequencing of tumor tissue.
•LUX-Lung 3 was a randomized, multicenter study comparing treatment with afatinib 40 mg orally once daily to intravenous cisplatin 75 mg/m ²plus pemetrexed 500 mg/m ²every 21 days for up to 6 cycles. EGFR status was determined by the therascreen ^®EGFR RGQ PCR Kit.
•LUX-Lung 6 was a randomized, multicenter study comparing treatment with afatinib 40 mg to intravenous gemcitabine 1000 mg/m ²on day 1 and day 8 plus cisplatin 75 mg/m ²on day 1 of a 3-week schedule for up to 6 cycles. EGFR status was determined by the therascreen ^®EGFR RGQ PCR Kit.
Among the 75 afatinib-treated patients with uncommon EGFR mutations, 32 patients had a non-resistant EGFR mutation. Among the 32 patients with a confirmed non-resistant EGFR mutation, the median age was 60.5 years (range 32 to 79), 66% were female, 97% were Asian, 3% were other races, 38% had an ECOG PS of 0, 63% had an ECOG PS 1, 66% were never smokers, 28% were former smokers, and 6% were current smokers. Baseline disease characteristics were 97% Stage IV disease, 3% Stage IIIb disease, and 88% had received no prior systemic therapy for advanced or metastatic disease.
The number of patients, the number of responders, and durations of response in subgroups defined by identified mutation(s) are summarized in Table 6
Table 6 IRC-Assessed Responses in Patients with NSCLC Harboring EGFR Mutations G719X, L861Q, and/or S768I from LUX-Lung 2, LUX-Lung 3, and LUX-Lung 6

+ response ongoing at time of censoring

The efficacy and safety of afatinib were demonstrated in a randomized, multicenter, open-label, active-controlled study (LUX-Lung 8 [NCT01523587]). Patients were required to have histologically documented, metastatic squamous NSCLC and have experienced disease progression following an adequate course (≥ 4 cycles) of a platinum-based doublet chemotherapy regimen. Patients were randomized (1:1) to receive afatinib 40 mg or erlotinib 150 mg orally once daily until progression. Randomization was stratified by region (Eastern Asia vs other). The major efficacy outcome measure was PFS as assessed by an IRC using RECIST v 1.1. Additional efficacy outcome measures were OS and ORR as assessed by IRC. 
Baseline patient demographics of the 795 patients were: median age 64 years (range: 35 to 88); 73% White; 24% Asian; 84% male; 33% ECOG PS 0 and 67% ECOG PS 1; and 95% current or former smokers. With regard to tumor characteristics, 96% had squamous cell histology and 3.5% had mixed cell histology. All patients received platinum-based doublet therapy. 
The study demonstrated a statistically significant improvement in PFS and OS for patients randomized to afatinib as compared with erlotinib (see Table 7 and Figure 3).
Table 7 Efficacy Results in LUX-Lung 8

*Log-rank test stratified by region.
 HR=hazard ratio
Figure 3 Kaplan-Meier Curves of Overall Survival in LUX-Lung 8

Afatinibfig3 (Afatinibfig3)

Afatinib tablets, 40 mg are white to off white, round, biconvex, bevel-edged, film-coated tablets debossed with “A40” on one side and “H” on the other side. They are supplied as follows:
Bottle of 30 tablets                                                                             NDC 31722-783-30
Afatinib tablets, 30 mg are white to off white, round, biconvex, bevel-edged, film-coated tablets debossed with “A30” on one side and “H” on the other side. They are supplied as follows:
Bottle of 30 tablets                                                                             NDC 31722-782-30
Afatinib tablets, 20 mg are white to off white, round, biconvex, bevel-edged, film-coated tablets debossed with “A20” on one side and “H” on the other side. They are supplied as follows:
Bottle of 30 tablets                                                                             NDC 31722-781-30
Storage 
Store at 20° to 25°C (68° to 77°F); excursions permitted to 15° to 30°C (59° to 86°F) [see USP Controlled Room Temperature]. Dispense medication in the original container to protect from exposure to high humidity and light.

Advise the patient to read the FDA-approved patient labeling (Patient Information).
Diarrhea 
Advise patients that diarrhea occurs in nearly all patients who receive afatinib tablets. Inform patients that diarrhea may result in dehydration and renal impairment if not treated. Advise patients to notify their physician if diarrhea develops and to seek medical attention promptly for severe or persistent diarrhea [ see Warnings and Precautions ( 5.1) and Adverse Reactions ( 6.1) ].
Bullous and Exfoliative Skin Disorders 
Advise patients to minimize sun exposure with protective clothing and use of sunscreen while taking afatinib tablets [ see Warnings and Precautions ( 5.2)].
Interstitial Lung Disease 
Advise patients to immediately report any new or worsening lung symptoms, or any combination of the following symptoms: trouble breathing or shortness of breath, cough, fever [see Warnings and Precautions ( 5.3) ]. 
Hepatic Toxicity
Advise patients that they will need to undergo liver function monitoring periodically. Advise patients to immediately report any symptoms of a liver problem [e.g., skin or the whites of eyes turn yellow, urine turns dark or brown (tea colored), pain on the right side of stomach, bleeds or bruises more easily than normal, lethargy] [ see Warnings and Precautions ( 5.4) ]. 
Gastrointestinal Perforation 
Advise patients that afatinib tablets can increase the risk of gastrointestinal perforation and to seek immediate medical attention for severe abdominal pain [see Warnings and Precautions ( 5.5) ].
Keratitis 
Advise patients to immediately report eye problems (e.g., eye pain, swelling, redness, blurred vision, or other vision changes) [ see Warnings and Precautions ( 5.6)].
Left Ventricular Dysfunction 
Advise patients to contact a healthcare professional immediately for any of the following: new onset or worsening shortness of breath or exercise intolerance, cough, fatigue, swelling of the ankles/legs, palpitations, or sudden weight gain [ see Dosage and Administration ( 2.3) and Adverse Reactions ( 6.1)]. 
Instructions for Taking Afatinib Tablets
Advise patients to take afatinib tablets on an empty stomach at least 1 hour before or 2 hours after eating [ see Dosage and Administration ( 2.2)]. Advise patients not to take a missed dose within 12 hours of the next dose. 
Embryo-Fetal Toxicity 
Advise pregnant women and females of reproductive potential that afatinib tablets can result in fetal harm. Advise female patients to contact their healthcare provider with a known or suspected pregnancy. Advise females of reproductive potential to use effective contraception during treatment with afatinib tablets and for at least 2 weeks after the last dose of afatinib tablets [ see Use in Specific Populations ( 8.1, 8.3)] .
Lactation 
Advise women not to breastfeed during treatment with afatinib tablets and for 2 weeks after the last dose of afatinib tablets [ see Use in Specific Populations ( 8.2)]. 
Infertility
Advise females and males of reproductive potential of the potential for reduced fertility from afatinib tablets [ see Use in Specific Populations ( 8.3) ].
The other brands listed are trademarks of their respective owners and are not trademarks of Hetero Labs Limited.

Afatinibcamberlogo (Afatinibcamberlogo)

Manufactured for:
Camber Pharmaceuticals, Inc.
Piscataway, NJ 08854.
By: HETERO ^TM
Hetero Labs Limited, Unit V, Polepally, Jadcherla,
Mahabubnagar - 509 301, India.
Revised: 06/2026

Afatinib (a fa′ ti nib)  Tablets

What are afatinib tablets?  Afatinib tablets are a prescription medicine that is used to treat people with non-small cell lung cancer (NSCLC) that:  • has certain (non-resistant) abnormal epidermal growth factor receptor (EGFR) gene(s). Your healthcare provider will perform a test to make sure that afatinib tablets are right for you.  • has spread to other parts of the body (metastatic), and • has not been previously treated for metastatic lung cancer  It is not known if afatinib tablets are safe and effective in treating people with lung cancer that has resistant abnormal EGFR genes. or • is used to treat people with squamous cell lung cancer that: • has spread to other parts of the body, and • has been previously treated with chemotherapy that contains platinum.  It is not known if afatinib tablets are safe and effective in children.

Before you take afatinib tablet, tell your healthcare provider about all of your medical conditions, including if you:  • have kidney or liver problems  • have lung or breathing problems other than lung cancer  • have a history of an ulcer, a tear (perforation) in your stomach or intestine, or diverticular disease (inflammation) in parts of your large intestine. See “What are the possible side effects of afatinib tablets?”  • have a history of severe dry eye or any other eye problems. Tell your healthcare provider if you wear contact lenses.  • have heart problems  • are pregnant or plan to become pregnant. Afatinib tablets can harm your unborn baby.  o Females who are able to become pregnant should use effective birth control during treatment with afatinib tablets and for at least 2 weeks after your last dose of afatinib tablets. Talk to your healthcare provider about birth control methods that may be right for you.  o Tell your healthcare provider right away if you become pregnant or think you are pregnant during treatment with afatinib tablets.  • are breastfeeding or plan to breastfeed. It is not known if afatinib passes into your breast milk. Do not breastfeed during treatment with afatinib tablets and for 2 weeks after your last dose of afatinib tablets. Talk to your healthcare provider about the best way to feed your baby if you take afatinib tablets.  Tell your healthcare provider about all the medicines you take,including prescription and over-the-counter medicines, vitamins, and herbal supplements. Afatinib tablets may affect the way other medicines work, and other medicines may affect the way afatinib tablets work. Taking certain medicines with afatinib tablets may increase your risk of developing a tear (perforation) in your stomach or intestine. See “What are the possible side effects of afatinib tablets?”  Know the medicines you take. Keep a list of them to show your healthcare provider or pharmacist when you get a new medicine.

How should I take afatinib tablets?  • Take afatinib tablets exactly as your healthcare provider tells you to take it.  • Your healthcare provider will tell you how many afatinib tablets to take and when to take them. Do not change your dose or stop afatinib tablets unless your healthcare provider tells you to.  • Take afatinib tablets on an empty stomach at least 1 hour before a meal or 2 hours after a meal.  • If you miss a dose of afatinib tablets, take it as soon as you remember. If it is within 12 hours of your next dose, skip the dose and just take your next dose at your regular time. Do not take 2 doses of afatinib tablets at the same time.  • If you take too much afatinib, call your healthcare provider or go to the nearest hospital emergency room right away.

What should I avoid while taking afatinib tablets?  Limit your time in the sun. Afatinib tablets can make your skin sensitive to sunlight. You could get or have worsening rash or acne. You could get a severe sunburn. Use sunscreen and wear a hat and clothes that cover your skin if you have to be in sunlight during treatment with afatinib tablets.

What are the possible side effects of afatinib tablets?  Afatinib tablets may cause serious side effects, including:  • diarrhea.Diarrhea is common with afatinib tablets and may sometimes be severe. Severe diarrhea can cause loss of too much body fluid (dehydration) and kidney problems that can sometimes lead to death. During your treatment with afatinib tablets, your healthcare provider should prescribe medicines to treat diarrhea. Take this medicine exactly as your healthcare provider tells you to. Tell your healthcare provider if you have diarrhea. Get medical attention right away if your diarrhea does not go away or becomes severe.  • skin reactions. Afatinib tablets can cause redness, rash, and acne. It is important to get treatment for skin reactions as soon as you notice them. Take medicines to help skin reactions exactly as your healthcare provider tells you to. Get medical attention right away if you develop severe skin reactions such as peeling or blistering of the skin, or blisters in your mouth.  • lung or breathing problems.Afatinib tablets may cause inflammation of the lung that may lead to death. Symptoms may be similar to those symptoms from lung cancer. Tell your healthcare provider right away if you have any new or worsening lung problems, or any combination of the following symptoms: trouble breathing or shortness of breath, cough, or fever.  • liver problems.Afatinib tablets can cause liver problems that can sometimes lead to death. Tell your healthcare provider right away if you have any symptoms of a liver problem which may include:  o yellowing of your skin or the white part of your eyes (jaundice)  o dark or brown (tea colored) urine  o pain on the upper right side of your stomach area (abdomen)  o bleeding or bruising more easily than normal  o feeling very tired  Your healthcare provider will do blood tests to check your liver function during your treatment with afatinib tablets.  • tear (perforation) in your stomach or intestine. Tears in your stomach or intestine can happen with afatinib tablets and can sometimes lead to death. Your risk of developing a tear in your stomach or intestine may be increased if you:  o take certain medicines with afatinib tablets including: corticosteroids, nonsteroidal anti-inflammatory drugs (NSAIDS), and certain other medicines. o have a history of stomach or intestinal ulcers, or if you have had diverticular disease (inflammation in parts of the large intestine).  Get medical help right away if you develop severe stomach-area (abdomen) pain during treatment with afatinib tablets. • eye problems.Tell your healthcare provider right away if you have symptoms of eye problems which may include: o eye pain, swelling, redness, or tearing  o sensitivity to light  o blurred vision                                          o other changes in your vision   • heart problems. Tell your healthcare provider right away if you have symptoms of a heart problem which may include: o new or worsening shortness of breath   while at rest or with activity o swelling of your ankles, feet, or legs  o cough                                                          o feeling that your heart is pounding or racing (palpitations)  o tiredness                                                  o sudden weight gain  Your healthcare provider may change your dose, temporarily stop or permanently stop treatment with afatinib tablets if you have certain side effects. The most common side effects of afatinib tablets include: • diarrhea       • dry skin                  • nausea  • rash                    • decreased appetite  • vomiting   • acne                                                 • itching • mouth sores                     • nail inflammation   Afatinib tablets may cause decreased fertility in females and males. This may affect your ability to have a child. Talk to your healthcare provider if this is a concern for you.  Tell your healthcare provider if you have any side effect that bothers you or that does not go away.  These are not all of the possible side effects of afatinib tablets. For more information, ask your healthcare provider or pharmacist. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

How should I store afatinib tablets?  • Store afatinib tablets at room temperature between 68°F to 77°F (20°C to 25°C).  • Keep afatinib tablets in the original container and keep the container tightly closed.  • Keep afatinib tablets away from moisture and light.  • Safely throw away (discard) any afatinib tablets that are out of date or no longer needed.  Keep afatinib tablets and all medicines out of the reach of children.

General information about afatinib tablets  Medicines are sometimes prescribed for purposes other than those listed in a Patient Information leaflet. Do not use afatinib tablets for a condition for which it was not prescribed. Do not give afatinib tablets to other people, even if they have the same symptoms you have. It may harm them. You can ask your healthcare provider or pharmacist for information about afatinib tablets that is written for health professionals. For more information, call Hetero Labs Limited at 1-866-495-1995.

What are the ingredients in afatinib tablets?  Active ingredient:afatinib dimaleate Inactive ingredients: Tablet Core:colloidal silicon dioxide, crospovidone, lactose monohydrate, magnesium stearate, microcrystalline cellulose. Tablet Coating:hypromellose, polyethylene glycol, polysorbate 80, talc and titanium dioxide. Afatinibcamberlogo (Afatinibcamberlogo) Manufactured for: Camber Pharmaceuticals, Inc. Piscataway, NJ 08854. By: HETERO TM Hetero Labs Limited, Unit V, Polepally, Jadcherla, Mahabubnagar - 509 301, India.

This Patient Information has been approved by the U.S. Food and Drug Administration.   
Revised: 06/2026

Afatinib 20 mg Container-Carton

Afatinib20mgcarton (Afatinib20mgcarton)

Afatinib 20 mg Container-Label

Afatinib20mglabel (Afatinib20mglabel)

Afatinib 30 mg Container -Carton

Afatinib30mgcarton (Afatinib30mgcarton)

Afatinib 30 mg Container -Label

Afatinib30mglabel (Afatinib30mglabel)

Afatinib 40 mg Container -Carton

Afatinib40mgcarton (Afatinib40mgcarton)

Afatinib 40 mg Container -Label

Afatinib40mglabel (Afatinib40mglabel)