Reversible confusional states, agitation, depression, hallucination; nausea, diarrhea, abdominal colic; agranulocytosis, pancytopenia, thrombocytopenia; erythematous skin rashes, erythema multiforme, exfoliative dermatitis; interstitial nephritis, hematuria, glycosuria; hypoglycemia, alopecia, blurred vision, arthralgia.