Glossitis, stomatitis, black "hairy" tongue, nausea, vomiting & diarrhea. Hypersensitivity reactions eg, skin rashes, urticaria, exfoliative dermatitis & erythema multiforme, anaphylaxis. Anemia, thrombocytopenia, thrombocytopenic purpura, eosinophilia, leukopenia & agranulocytosis, moderate rise in SGOT.