Trusted Prescription Drug Information

What should I discuss with my healthcare provider before taking Famvir?
• Do not take Famvir if you are allergic to penciclovir (Denavir) without first talking to your doctor.
• Before taking this medication, tell your doctor if you have kidney disease. You may need a dosage adjustment or special monitoring during treatment with Famvir.
• Famvir is in the FDA pregnancy category B. This means that it is unlikely to harm an unborn baby. Do not take famciclovir without first talking to your doctor if you are pregnant.
• It is not known whether Famvir passes into breast milk. Do not take it without first talking to your doctor if you are breast-feeding a baby.
• The safety and effectiveness of Famvir have not been established for children younger than 18 years of age.