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Famvir is a prescription medication that is used for treating shingles, cold sores, and genital herpes. This eMedTV article describes the effects of Famvir, explains how the medicine works, and provides dosing tips and precautions for the drug.
Fatigue, headaches, and nausea are some of the more common side effects of Famvir. As this eMedTV page explains, while most Famvir side effects are mild, some -- such as jaundice, hallucinations, or allergic reactions -- may require medical attention.
Famvir uses can include the treatment of shingles, genital herpes, and cold sores. This eMedTV Web page discusses Famvir uses in more detail, lists possible "off-label" uses of the medicine, and explains whether the drug can be used in children.
The starting Famvir dosage for treating shingles is 500 mg three times daily for seven days. This page on the eMedTV Web site also offers Famvir dosing recommendations for the treatment of cold sores, genital herpes, and HIV.
When you take digoxin or probenecid with Famvir, drug interactions may potentially occur. As this part of the eMedTV library explains, Famvir drug interactions can affect drug levels in your blood and potentially increase your risk of side effects.
Seizures and a coma are among the possible symptoms of a Famvir overdose. This eMedTV page explains that while it isn't known exactly what to expect from a Famvir overdose, symptoms may be similar to those of an overdose on acyclovir, a similar drug.
You shouldn't take Famvir if you are allergic to a drug called Denavir or to any components of Famvir. This eMedTV page lists other Famvir warnings and precautions, including medical conditions you should tell your doctor about before taking the drug.
Famvir is generally considered safe to use during pregnancy. This eMedTV resource describes the animal studies that have been conducted on Famvir and pregnancy, and explains what a doctor will consider before prescribing the drug to a pregnant woman.
While Famvir passes through breast milk in rats, it is not known if it passes through breast milk in humans. This eMedTV page further discusses Famvir and breastfeeding and explains the precautions you should take before using the drug while nursing.
Famvir is currently available in generic form. This eMedTV segment offers an overview of generic Famvir (known as Famciclovir tablets), including information on who manufactures it and how it compares to brand-name Famvir.
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