title: Comparison of ranitidine 300 mg nocte and 150 mg twice daily in the treatment of duodenal ulcer.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002986:Clinical Trials as Topic; D004334:Drug Administration Schedule; D004381:Duodenal Ulcer / Q000188:drug therapy*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011897:Random Allocation; D011899:Ranitidine / Q000008:administration & dosage*
chemical_list: D011899:Ranitidine