| gptkbp:instanceOf | gptkb:drug gptkb:biguanide
 
 | 
                        
                            
                                | gptkbp:approvalYear | 1994 
 | 
                        
                            
                                | gptkbp:approvedBy | gptkb:FDA 
 | 
                        
                            
                                | gptkbp:ATCCode | A10BA02 
 | 
                        
                            
                                | gptkbp:bioavailability | 50-60% 
 | 
                        
                            
                                | gptkbp:brand | gptkb:Riomet gptkb:Fortamet
 gptkb:Glucophage
 gptkb:Glumetza
 
 | 
                        
                            
                                | gptkbp:CASNumber | 657-24-9 
 | 
                        
                            
                                | gptkbp:chemicalClass | gptkb:biguanide 
 | 
                        
                            
                                | gptkbp:contraindication | severe renal impairment metabolic acidosis
 hypersensitivity to metformin
 
 | 
                        
                            
                                | gptkbp:discoveredBy | gptkb:James_Bell gptkb:Emile_Werner
 
 | 
                        
                            
                                | gptkbp:discoveredIn | 1922 
 | 
                        
                            
                                | gptkbp:drugClass | antihyperglycemic agent 
 | 
                        
                            
                                | gptkbp:eliminationHalfLife | 4-8.7 hours 
 | 
                        
                            
                                | gptkbp:excretion | renal 
 | 
                        
                            
                                | gptkbp:form | gptkb:tablet oral solution
 extended-release tablet
 
 | 
                        
                            
                                | gptkbp:hasMolecularFormula | C4H11N5·HCl 
 | 
                        
                            
                                | gptkbp:indication | gptkb:polycystic_ovary_syndrome gptkb:gestational_diabetes
 gptkb:prediabetes
 
 | 
                        
                            
                                | gptkbp:legalStatus | prescription only 
 | 
                        
                            
                                | gptkbp:mechanismOfAction | decreases hepatic glucose production increases insulin sensitivity
 decreases intestinal absorption of glucose
 
 | 
                        
                            
                                | gptkbp:metabolism | not metabolized 
 | 
                        
                            
                                | gptkbp:offLabelUse | weight loss anti-aging research
 
 | 
                        
                            
                                | gptkbp:pregnancyCategory | B 
 | 
                        
                            
                                | gptkbp:proteinBinding | negligible 
 | 
                        
                            
                                | gptkbp:routeOfAdministration | oral 
 | 
                        
                            
                                | gptkbp:sideEffect | nausea diarrhea
 gastrointestinal upset
 lactic acidosis
 
 | 
                        
                            
                                | gptkbp:synonym | gptkb:1,1-dimethylbiguanide_hydrochloride gptkb:dimethylbiguanide_hydrochloride
 
 | 
                        
                            
                                | gptkbp:usedFor | gptkb:type_2_diabetes_mellitus 
 | 
                        
                            
                                | gptkbp:WHOModelListOfEssentialMedicines | yes 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:DB00907 
 | 
                        
                            
                                | gptkbp:bfsLayer | 7 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Metformin HCl 
 |