title: Effect of ranitidine and cimetidine twice daily on the 24 h intragastric acidity in man.
mesh_terms: D000328:Adult; D002927:Cimetidine / Q000494:pharmacology*; D004311:Double-Blind Method; D004334:Drug Administration Schedule; D005260:Female; D005744:Gastric Acid / Q000378:metabolism*; D006801:Humans; D008297:Male; D011899:Ranitidine / Q000494:pharmacology*; D013997:Time Factors
chemical_list: D002927:Cimetidine; D011899:Ranitidine