title: Decreased theophylline clearance due to cimetidine.
mesh_terms: D000293:Adolescent; D002927:Cimetidine / Q000494:pharmacology*; D005260:Female; D006146:Guanidines / Q000494:pharmacology*; D006801:Humans; D013806:Theophylline / Q000097:blood / Q000378:metabolism*
chemical_list: D006146:Guanidines; D002927:Cimetidine; D013806:Theophylline