| gptkbp:instanceOf | gptkb:brand gptkb:antihistamine
 
 | 
                        
                            
                                | gptkbp:activeIngredient | diphenhydramine 
 | 
                        
                            
                                | gptkbp:approvedBy | 1946 
 | 
                        
                            
                                | gptkbp:ATCCode | R06AA02 
 | 
                        
                            
                                | gptkbp:availableOn | gptkb:Canada gptkb:India
 gptkb:United_States
 
 | 
                        
                            
                                | gptkbp:CASNumber | 58-73-1 
 | 
                        
                            
                                | gptkbp:category | gptkb:first-generation_antihistamine 
 | 
                        
                            
                                | gptkbp:cause | anticholinergic effects paradoxical excitation (children)
 
 | 
                        
                            
                                | gptkbp:chemicalClass | ethanolamine 
 | 
                        
                            
                                | gptkbp:contraindication | gptkb:glaucoma asthma
 enlarged prostate
 
 | 
                        
                            
                                | gptkbp:excretion | urine 
 | 
                        
                            
                                | gptkbp:form | gptkb:tablet gptkb:water
 capsule
 topical cream
 
 | 
                        
                            
                                | gptkbp:genericName | diphenhydramine 
 | 
                        
                            
                                | gptkbp:halfLife | 4-8 hours 
 | 
                        
                            
                                | gptkbp:interactsWith | gptkb:beer gptkb:MAO_inhibitors
 gptkb:CNS_depressants
 
 | 
                        
                            
                                | gptkbp:legalStatus | gptkb:OTC 
 | 
                        
                            
                                | gptkbp:manufacturer | gptkb:Johnson_&_Johnson 
 | 
                        
                            
                                | gptkbp:metabolism | liver 
 | 
                        
                            
                                | gptkbp:notRecommendedFor | children under 2 years 
 | 
                        
                            
                                | gptkbp:overdoseSymptoms | gptkb:arrhythmia seizures
 hallucinations
 
 | 
                        
                            
                                | gptkbp:pregnancyCategory | B (US) 
 | 
                        
                            
                                | gptkbp:prescriptionStatus | over-the-counter (US) prescription-only (UK)
 
 | 
                        
                            
                                | gptkbp:PubChem_CID | DB01075 
 | 
                        
                            
                                | gptkbp:routeOfAdministration | oral topical
 
 | 
                        
                            
                                | gptkbp:sideEffect | dizziness blurred vision
 drowsiness
 dry mouth
 urinary retention
 
 | 
                        
                            
                                | gptkbp:storage | 20-25°C (68-77°F) 
 | 
                        
                            
                                | gptkbp:usedFor | cough itching
 insomnia
 allergy relief
 hives
 motion sickness
 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:Warner-Lambert 
 | 
                        
                            
                                | gptkbp:bfsLayer | 6 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Benadryl 
 |