The more severe adverse reactions observed are the skin, hepatic, cardiovascular and hematologic reactions, which require discontinuation of therapy.
The following additional adverse reactions have been reported: Skin: Lyell's syndrome, Stevens-Johnson syndrome, urticaria, photosensitivity reactions, exfoliative dermatitis.
Hematologic: Leukopenia, agranulocytosis, aplastic anemia, thrombocytopenia, leukocytosis, acute intermittent porphyria.
Cardiovascular: Hypertension or hypotension, arrhythmias, bradycardia, congestive heart failure aggravation of coronary artery disease.
Respiratory: Pulmonary hypersensitivity characterized by fever, dyspnea, pneumonitis or pneumonia.
Gastrointestinal: Nausea, vomiting, diarrhea, constipation, anorexia, glossitis, stomatitis.
Musculoskeletal: Muscle pain or cramp, arthralgia.
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