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                                                                Synonyms: BRL-42810 | BRL42810 | Famvir® | FCV
                                 
                                                         
                            
                            
                            
                                 
                                
                                famciclovir is an approved drug (FDA (1994), UK (1995)) 
                                                        
                                                    
                                Compound class: 
                                                            Synthetic organic
                                 
                                
                                    
                                        Comment: Famciclovir is an orally-delivered, prodrug of the antiviral agent penciclovir [1]. The active metabolite, penciclovir triphosphate, has activity against Herpes viruses and varicella-zoster. Penciclovir triphosphate is a nucleoside analogue that inhibits viral DNA replication by interfering competitively with DNA polymerase.
                                    
                                 
                            
                            
                          
                                
                                    
                                
                          
                                   
                                   
                                  
                                      
                                     
                                   
                                   
                                    
                                    
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| No information available. | 
Summary of Clinical Use ![]()  | 
                                                        
| Famciclovir is used to treat herpes zoster and simplex virus infections. | 
Pharmacokinetics ![]()  | 
                                                        
| Biotransformation/Metabolism | 
| After oral dosing more than half the dose of famciclovir is absorbed and rapidly converted to penciclovir [1]. | 
External links ![]()  | 
                                                            
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                                                                    For extended ADME data see the following: Drugs.com  |