title: Pre-anesthetic cimetidine and gastric pH.
mesh_terms: D002927:Cimetidine / Q000008:administration & dosage / Q000494:pharmacology*; D004341:Drug Evaluation; D005745:Gastric Acidity Determination; D005750:Gastric Juice / Q000032:analysis / Q000187:drug effects* / Q000502:physiology; D005753:Gastric Mucosa / Q000187:drug effects; D006024:Glycopyrrolate / Q000494:pharmacology; D006146:Guanidines / Q000494:pharmacology*; D006632:Histamine / Q000502:physiology; D006801:Humans; D006863:Hydrogen-Ion Concentration; D011015:Pneumonia, Aspiration / Q000209:etiology; D011229:Preanesthetic Medication
chemical_list: D006146:Guanidines; D002927:Cimetidine; D006632:Histamine; D006024:Glycopyrrolate