title: Relationship between antihistamic activity and plasma level of diphenhydramine.
mesh_terms: D000284:Administration, Oral; D000328:Adult; D002214:Capsules; D002849:Chromatography, Gas; D004155:Diphenhydramine / Q000008:administration & dosage / Q000097:blood* / Q000627:therapeutic use; D006632:Histamine / Q000008:administration & dosage; D006634:Histamine H1 Antagonists / Q000008:administration & dosage / Q000097:blood* / Q000627:therapeutic use; D006801:Humans; D006993:Hypnotics and Sedatives / Q000494:pharmacology; D007271:Injections, Intradermal; D007700:Kinetics; D008297:Male; D014677:Pharmaceutical Vehicles; D011340:Problem Solving; D011594:Psychometrics; D012882:Skin Tests; D013608:Tablets, Enteric-Coated; D013997:Time Factors; D013998:Time Perception / Q000187:drug effects
chemical_list: D002214:Capsules; D006634:Histamine H1 Antagonists; D006993:Hypnotics and Sedatives; D014677:Pharmaceutical Vehicles; D013608:Tablets, Enteric-Coated; D006632:Histamine; D004155:Diphenhydramine