Cimetidine in the treatment of peptic ulceration following renal transplantation.

Seven patients who developed peptic ulceration following renal transplantation have been treated by cimetidine. One died before its value could be assessed. The remaining 6 were symptom-free within 48 h. In 3 patients the ulcer appeared healed on gastroscopy, in one there was no change, another required operation for gastrointestinal bleeding 1 month after beginning cimetidine and the other patient has been lost to follow-up after 5 months' treatment. Two patients had a significant rise of serum creatinine whilst on the drug, but there is no evidence of increased immunological reactivity towards the graft and no agranulocytosis.