Doctors advise against using famvir if you are allergic to any ingredient in it or if you have conditions like intolerance to glucose or lactase deficiency.
Discuss your past/current medical history in detail with your doctor before beginning treatment with any new medication. If you are using any herbal supplements or over the counter medication, including vitamin pills, then mention it to your doctor.
If you are expecting a child or are planning to have a child in the near future, then consult your doctor before using famvir to discuss any possible threats to the unborn baby.
If you are a nursing mother and breast feed your baby, then too, seek consultation before using famvir as some drugs are excreted in the breast milk and may enter the baby.
Do NOT use Famvir if:
you are allergic to any ingredient in Famvir or to penciclovir
you have galactose intolerance, severe lactase deficiency, or glucose-galactose absorption problems
Contact your doctor or health care provider right away if any of these apply to you.
Some medical conditions may interact with Famvir . Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:
if you are pregnant, planning to become pregnant, or are breast-feeding
if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
if you have allergies to medicines, foods, or other substances
if you have kidney problems
Some MEDICINES MAY INTERACT with Famvir . However, no specific interactions with Famvir are known at this time.