Serious adverse reactions that may be associated with oxycodone and acetaminophen tablet use include
respiratory depression, apnea, respiratory arrest, circulatory depression, hypotension and shock (see
OVERDOSAGE).
The most frequently observed non-serious adverse reactions include lightheadedness, dizziness,
drowsiness or sedation, nausea and vomiting. These effects seem to be more prominent in ambulatory
than in nonambulatory patients, and some of these adverse reactions may be alleviated if the patient lies
down. Other adverse reactions include euphoria, dysphoria, constipation and pruritus.
Hypersensitivity reactions may include: Skin eruptions, urticarial, erythematous skin reactions.
Hematologic reactions may include: Thrombocytopenia, neutropenia, pancytopenia, hemolytic anemia.
Rare cases of agranulocytosis has likewise been associated with acetaminophen use. In high doses, the
most serious adverse effect is a dose-dependent, potentially fatal hepatic necrosis. Renal tubular
necrosis and hypoglycemic coma also may occur.
Other adverse reactions obtained from postmarketing experiences with oxycodone and acetaminophen
tablets are listed by organ system and in decreasing order of severity and/or frequency as follows:
Body as a Whole
Anaphylactoid reaction, allergic reaction, malaise, asthenia, fatigue, chest pain, fever, hypothermia,
thirst, headache, increased sweating, accidental overdose, non-accidental overdose
Cardiovas cular
Hypotension, hypertension, tachycardia, orthostatic hypotension, bradycardia, palpitations, dysrhythmias
Central and Peripheral Nervous Sys tem
Stupor, tremor, paraesthesia, hypoaesthesia, lethargy, seizures, anxiety, mental impairment, agitation,
cerebral edema, confusion, dizziness
Fluid and Electrolyte
Dehydration, hyperkalemia, metabolic acidosis, respiratory alkalosis
Gas trointes tinal
Dyspepsia, taste disturbances, abdominal pain, abdominal distention, sweating increased, diarrhea, dry
mouth, flatulence, gastrointestinal disorder, nausea, vomiting, pancreatitis, intestinal obstruction, ileus
Hepatic
Transient elevations of hepatic enzymes, increase in bilirubin, hepatitis, hepatic failure, jaundice,
hepatotoxicity, hepatic disorder
Hearing and Ves tibular
Hearing loss, tinnitus
Hematologic
Thrombocytopenia
Hypers ens itivity
Acute anaphylaxis, angioedema, asthma, bronchospasm, laryngeal edema, urticaria, anaphylactoid
reaction
Metabolic and Nutritional
Hypoglycemia, hyperglycemia, acidosis, alkalosis
Mus culos keletal
Myalgia, rhabdomyolysis
Ocular
Miosis, visual disturbances, red eye
Ps ychiatric
Drug dependence, drug abuse, insomnia, confusion, anxiety, agitation, depressed level of
consciousness, nervousness, hallucination, somnolence, depression, suicide
Res piratory Sys tem
Bronchospasm, dyspnea, hyperpnea, pulmonary edema, tachypnea, aspiration, hypoventilation, laryngeal
edema
Skin and Appendages
Erythema, urticaria, rash, flushing
Urogenital
Interstitial nephritis, papillary necrosis, proteinuria, renal insufficiency and failure, urinary retention