| gptkbp:instanceOf | gptkb:first-generation_antihistamine gptkb:drug
 gptkb:antihistamine
 
 | 
                        
                            
                                | gptkbp:approvedBy | 1946 
 | 
                        
                            
                                | gptkbp:ATCCode | R06AA02 
 | 
                        
                            
                                | gptkbp:brand | gptkb:Benadryl gptkb:Nytol
 
 | 
                        
                            
                                | gptkbp:canCauseDependence | no 
 | 
                        
                            
                                | gptkbp:CASNumber | 58-73-1 
 | 
                        
                            
                                | gptkbp:chemicalFormula | gptkb:C17H21NO 
 | 
                        
                            
                                | gptkbp:contraindication | gptkb:glaucoma asthma
 enlarged prostate
 
 | 
                        
                            
                                | gptkbp:discoveredBy | gptkb:George_Rieveschl 
 | 
                        
                            
                                | gptkbp:discoveredIn | 1943 
 | 
                        
                            
                                | gptkbp:eliminationHalfLife | 2.4–9.3 hours 
 | 
                        
                            
                                | gptkbp:excretion | urine 
 | 
                        
                            
                                | gptkbp:interactsWith | gptkb:beer gptkb:MAO_inhibitors
 gptkb:CNS_depressants
 
 | 
                        
                            
                                | gptkbp:isAvailableAsGeneric | yes 
 | 
                        
                            
                                | gptkbp:IUPACName | 2-(diphenylmethoxy)-N,N-dimethylethanamine 
 | 
                        
                            
                                | gptkbp:legalStatus | OTC (over-the-counter) 
 | 
                        
                            
                                | gptkbp:mechanismOfAction | H1 receptor antagonist anticholinergic
 
 | 
                        
                            
                                | gptkbp:MeSH_ID | D004008 
 | 
                        
                            
                                | gptkbp:metabolism | liver 
 | 
                        
                            
                                | gptkbp:molecularWeight | 255.36 g/mol 
 | 
                        
                            
                                | gptkbp:overdoseSymptoms | gptkb:death gptkb:arrhythmia
 delirium
 seizures
 hallucinations
 
 | 
                        
                            
                                | gptkbp:pregnancyCategory | B (US) 
 | 
                        
                            
                                | gptkbp:PubChem_CID | 3100 CHEMBL651
 DB01075
 
 | 
                        
                            
                                | gptkbp:recreationalActivity | yes 
 | 
                        
                            
                                | gptkbp:routeOfAdministration | oral topical
 intramuscular
 intravenous
 
 | 
                        
                            
                                | gptkbp:sideEffect | confusion constipation
 dizziness
 blurred vision
 drowsiness
 dry mouth
 urinary retention
 
 | 
                        
                            
                                | gptkbp:UNII | 8GTS82S83M 
 | 
                        
                            
                                | gptkbp:usedFor | insomnia cough suppression
 extrapyramidal symptoms
 parkinsonism
 allergy relief
 motion sickness
 
 | 
                        
                            
                                | gptkbp:WHOModelListOfEssentialMedicines | true 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:Cough_Syrup 
 | 
                        
                            
                                | gptkbp:bfsLayer | 7 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Diphenhydramine 
 |