Famciclovir 500mg

Antiviral Agent

CSA NA – FDA Approved – REMS (N) – Can Ship

Famciclovir, Famvir is an inactive prodrug that is rapidly and extensively converted to penciclovir which is further converted through a series of steps to penciclovir triphosphate which inhibits DNA synthesis thereby preventing viral replication by competing with deoxyguanosine triphosphate and taking its place during viral DNA transcription.

Famciclovir, Famvir is officially indicated for use in various presentations of herpes simplex virus infection, or herpes zoster (shingles).

Before starting Famciclovir, Famvir make sure your physician is aware of any allergies or medications you currently take, if you have severe lactose intolerance, if you have kidney disease, are pregnant or breastfeeding.

125-1500mg one to three times per day depending on condition it is used for

How to Take: Follow instructions provided by physician/pharmacy label, take consistently at same times each day unless otherwise directed, store at room temperature and take without regard to meals.

Headache, nausea, fatigue, diarrhea, dysmenorrhea 

Note this is not a complete list of side effects, only common ones

1. I have had Famciclovir, Famvir before but why is my dosage so different this time?
   Depending on the condition or scenario that this medication is used for the dosage can vary greatly.  It may change depending if this is the first episode of a chronic infection versus subsequent episodes, if it is used for prevention, or for a completely different condition.  For example, if you use this medication as needed for cold sores but then get shingles you would have a completely different regimen.  If you are concerned, speak with your physician or pharmacist for further clarification.