the paper reports the results of a double-blind study carried out with colloidal bismuth subcitrate ( cbs , de-nol ) , an antiulcer drug with cytoprotective activity , versus ranitidine ( rn ) with the aim of assessing its therapeutic efficacy in promoting healing of either gastric or duodenal ulcers induced by nsaids .
C0034665
ranitidine
C0013295
duodenal ulcers