| gptkbp:instanceOf | gptkb:drug gptkb:opioid
 
 | 
                        
                            
                                | gptkbp:antidote | gptkb:naloxone 
 | 
                        
                            
                                | gptkbp:approvedBy | 1977 
 | 
                        
                            
                                | gptkbp:approvedInUS | 1995 
 | 
                        
                            
                                | gptkbp:ATCCode | N02AX02 
 | 
                        
                            
                                | gptkbp:bioavailability | 70% (oral) 
 | 
                        
                            
                                | gptkbp:brand | gptkb:Conzip gptkb:Rybix_ODT
 gptkb:Ultram
 gptkb:Ryzolt
 
 | 
                        
                            
                                | gptkbp:CASNumber | 27203-92-5 
 | 
                        
                            
                                | gptkbp:chemicalFormula | C16H25NO2 
 | 
                        
                            
                                | gptkbp:contraindication | gptkb:monoamine_oxidase_inhibitors children under 12
 severe respiratory depression
 acute intoxication with alcohol
 
 | 
                        
                            
                                | gptkbp:controlledSubstanceSchedule | Schedule IV (US) 
 | 
                        
                            
                                | gptkbp:developedBy | gptkb:GrĂ¼nenthal_GmbH 
 | 
                        
                            
                                | gptkbp:discoveredIn | 1962 
 | 
                        
                            
                                | gptkbp:eliminationHalfLife | 6.3 hours 
 | 
                        
                            
                                | gptkbp:excretion | gptkb:kidney 
 | 
                        
                            
                                | gptkbp:interactsWith | gptkb:tricyclic_antidepressants gptkb:SSRIs
 MAOIs
 other opioids
 
 | 
                        
                            
                                | gptkbp:legalStatus | prescription only 
 | 
                        
                            
                                | gptkbp:mechanismOfAction | gptkb:norepinephrine_reuptake_inhibitor mu-opioid receptor agonist
 
 | 
                        
                            
                                | gptkbp:metabolism | gptkb:O-desmethyltramadol liver
 
 | 
                        
                            
                                | gptkbp:molecularWeight | 263.38 g/mol 
 | 
                        
                            
                                | gptkbp:overdoseSymptoms | coma seizures
 respiratory depression
 
 | 
                        
                            
                                | gptkbp:pregnancyCategory | C (US) 
 | 
                        
                            
                                | gptkbp:proteinBinding | 20% 
 | 
                        
                            
                                | gptkbp:riskFactor | gptkb:serotonin_syndrome seizures
 dependence
 
 | 
                        
                            
                                | gptkbp:routeOfAdministration | oral intramuscular
 intravenous
 rectal
 
 | 
                        
                            
                                | gptkbp:sideEffect | nausea constipation
 dizziness
 headache
 drowsiness
 
 | 
                        
                            
                                | gptkbp:usedFor | pain management 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:serotonin_syndrome gptkb:Citalopram
 gptkb:Serotonin_syndrome
 gptkb:Valeron
 
 | 
                        
                            
                                | gptkbp:bfsLayer | 7 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | tramadol 
 |