| gptkbp:instanceOf | gptkb:antibiotic 
 | 
                        
                            
                                | gptkbp:administeredBy | oral intramuscular
 intravenous
 
 | 
                        
                            
                                | gptkbp:ATCCode | gptkb:J01C 
 | 
                        
                            
                                | gptkbp:CASNumber | 61-33-6 (Penicillin G) 
 | 
                        
                            
                                | gptkbp:category | gptkb:natural_product antimicrobial
 
 | 
                        
                            
                                | gptkbp:cause | gptkb:Clostridioides_difficile_infection nausea
 diarrhea
 seizures (rare)
 
 | 
                        
                            
                                | gptkbp:chemicalFormula | C16H18N2O4S (Penicillin G) 
 | 
                        
                            
                                | gptkbp:contraindication | penicillin allergy 
 | 
                        
                            
                                | gptkbp:discoveredBy | gptkb:Alexander_Fleming 
 | 
                        
                            
                                | gptkbp:discoveredIn | 1928 
 | 
                        
                            
                                | gptkbp:eliminatedIn | renal 
 | 
                        
                            
                                | gptkbp:firstClinicalUse | 1941 
 | 
                        
                            
                                | gptkbp:firstMarketedBy | gptkb:Pfizer 
 | 
                        
                            
                                | gptkbp:firstProduced | 1940s 
 | 
                        
                            
                                | gptkbp:includedIn | gptkb:United_States_Pharmacopeia gptkb:WHO_Model_List_of_Essential_Medicines
 gptkb:British_National_Formulary
 
 | 
                        
                            
                                | gptkbp:introducedIn | gptkb:World_War_II 
 | 
                        
                            
                                | gptkbp:legalStatus | prescription only 
 | 
                        
                            
                                | gptkbp:mechanismOfAction | inhibits cell wall synthesis 
 | 
                        
                            
                                | gptkbp:metabolism | liver 
 | 
                        
                            
                                | gptkbp:notEffectiveAgainst | fungal infections viral infections
 parasitic infections
 
 | 
                        
                            
                                | gptkbp:origin | gptkb:mold 
 | 
                        
                            
                                | gptkbp:pregnancyCategory | generally safe 
 | 
                        
                            
                                | gptkbp:producedBy | gptkb:Penicillium_fungi 
 | 
                        
                            
                                | gptkbp:relatedTo | gptkb:amoxicillin gptkb:methicillin
 gptkb:ampicillin
 
 | 
                        
                            
                                | gptkbp:resistanceObservedIn | some bacteria 
 | 
                        
                            
                                | gptkbp:sideEffect | allergic reaction anaphylaxis
 rash
 
 | 
                        
                            
                                | gptkbp:spectrumOfActivity | mainly Gram-positive bacteria 
 | 
                        
                            
                                | gptkbp:storage | cool, dry place 
 | 
                        
                            
                                | gptkbp:type | gptkb:antibiotic 
 | 
                        
                            
                                | gptkbp:usedFor | bacterial infections 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:St._Mary's_Hospital 
 | 
                        
                            
                                | gptkbp:bfsLayer | 6 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Penicillin 
 |