The following adverse reactions have been identified during post-approval use of amiodarone hydrochloride. 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.
Hematologic:hemolytic anemia, aplastic anemia, pancytopenia, neutropenia, thrombocytopenia, agranulocytosis, granuloma.
Immune:anaphylactic/anaphylactoid reaction (including shock), angioedema.
Neurologic:pseudotumor cerebri, parkinsonian symptoms such as akinesia and bradykinesia (sometimes reversible with discontinuation of therapy), demyelinating polyneuropathy.
Psychiatric:hallucination, confusional state, disorientation, delirium.
Cardiac:hypotension (sometimes fatal), sinus arrest.
Respiratory:eosinophilic pneumonia, acute respiratory distress syndrome in the post-operative setting, bronchospasm, bronchiolitis obliterans organizing pneumonia, pulmonary alveolar hemorrhage, pleural effusion, pleuritis.
Gastrointestinal:pancreatitis, acute pancreatitis.
Hepatic:hepatitis, cholestatic hepatitis, cirrhosis.
Skin and Subcutaneous Tissue Disorders:urticaria, toxic epidermal necrolysis (sometimes fatal), erythema multiforme, Stevens-Johnson syndrome, exfoliative dermatitis, bullous dermatitis, drug rash with eosinophilia and systemic symptoms (DRESS), eczema, pruritus, skin cancer, lupus-like syndrome.
Musculoskeletal:myopathy, muscle weakness, rhabdomyolysis.
Renal:renal impairment, renal insufficiency, acute renal failure.
Reproductive:epididymitis, impotence.
Body as a whole:fever, dry mouth.
Endocrine and metabolic:thyroid nodules/thyroid cancer, syndrome of inappropriate antidiuretic hormone secretion (SIADH).
Vascular:vasculitis.