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                                                                Synonyms: Ethoxynaphthamido Penicillin Sodium | Nallpen® | Unipen®
                                 
                                                         
                            
                            
                            
                                 
                                
                                nafcillin is an approved drug (FDA (1965)) 
                                                        
                                                    
                                Compound class: 
                                                            Synthetic organic
                                 
                                
                                    
                                        Comment: Nafcillin is a semi-synthetic naphthalene, penicillinase resistant β-lactam antibacterial.
                                    
                                 
                            
                            
                          
                                
                                    
                                
                          
                                   
                                   
                                  
                                    
                                    
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Summary of Clinical Use ![]()  | 
                                                        
| Nafcillin is used to treat infections caused by penicillin-resistant strains of Staphylococci, except MRSA. In the US nafcillin or oxacillin are recommended as the first-line treatment of choice for staphylococcal endocarditis (in patients with no artificial heart valves). | 
External links ![]()  | 
                                                            
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                                                                    For extended ADME data see the following: Drugs.com  |