“…The drug is effective in at least a proportion of pa tients with ulcerative colitis. The side effects described include nausea, vomiting, skin rash, fever, joint pains, agranulocytosis [22], pancreatitis [4] and yellow pigmentation of the skin [24]. Only a few cases of hemo lysis have been described [5-7, 9-12, 18, 20, 22], In these cases, the ane mia appeared soon after the commencement of treatment and in those pa tients examined, a deficiency of red cell G6PD was found.…”