Nausea, vomiting, diarrhea, pseudomembranous colitis, hemorrhagic colitis, staining of the teeth &/or tongue, gastroenteritis, abdominal pain, glossitis, papillar hypertrophy of the tongue, heartburn, pharyngeal pain, increased salivation & taste perversion. Fever, seizure, dizziness, somnolence, tremor, confusion, myoclonus, paresthesia, vertigo, headache, myoclonus, encephalopathy, psychic disturbances including hallucinations. Rash, pruritus, urticaria, allergic dermatitis, erythema multiforme, SJS, angioedema, TEN, flushing, cyanosis, candidiasis, hyperhidrosis, pruritus vulvae, pain & erythema at inj site, phlebitis. Eosinophilia, leucopenia, neutropenia, agranulocytosis, pancytopenia, thrombocytopenia, bone marrow depression, hemolytic anemia. Increases in BUN &/or serum creatinine conc, oliguria/anuria, polyuria, discoloration of urine, proteinuria, acute renal failure. Increases in serum conc of AST, ALT, alkaline phosphatase, LDH & bilirubin, jaundice, hepatitis. Chest discomfort, dyspnea, hyperventilation, thoracic spine pain. Hypotension, palpitation, tachycardia. Hearing loss, tinnitus, polyarthralgia.