“…Maintenance treatment with cimetidine in a low dose is effective in preventing duodenal ulcer relapse (Bodemar and Walan, 1978;Blackwood, Maudgal and Northfield, 1978;Gumand-H0yer et al, 1978;Burland et al, 1978;Gray et al, 1978;Hetzel et al, 1978). In the prevention of gastric ulcer relapse cimetidine seems equally effective (Machell et al, 1979;Birger Jensen et al, 1979).…”