[Effect of cimetidine on lactose activity in patients with duodenal ulcer].

A significant decrease of the lactose levels (p less than .001) and of the glucose peaks after an overcharge of lactose (p less than .01) were found in 10 patients with duodenal ulcer after a treatment of 35 days with 1,2 daily grams of Cimetidine, when they were compared with a group treated with placebos.