Famvir is the trade name of Famciclovir and is used in treating various types of viral infections. The antiviral drug is effective in treating herpes. This condition can appear in various parts of the body especially on the genitals or mouth.

There are two types of the herpes virus such as HSV-1 and HSV-2. The former causes cold sores and fever blisters around the mouth and the latter causes genital herpes outbreaks. Herpes are contagious and is recommended to wash the hands to prevent passing infection to others.

Important information

Famvir is used to treat infections that are caused by herpes virus including shingles, cold sores as well as genital herpes. This drug slows the growth and also controls the spread of the herpes virus to other parts of the body. This enables the body to fight against the infection.

This drug helps a patient in best possible ways even though it is not a cure. Famvir helps in decreasing the severity and length of the outbreaks, in healing the sores as well as preventing new sores from happening in the future. Itchiness caused by the disease can be reduced by using this drug


Famvir pill is usually taken two or three times per day with or without food. The course of therapy should be started as soon as possible after experiencing certain symptoms like tingling, burning and blisters.

It is very important to consult the doctor before taking this pill and is equally important to take Famvir for a prescribed period of time.

Depending upon the age, severity of the condition and tolerance of a patient the dosage strength would be prescribed. It is essential to take this drug at regular intervals as only then the patient could get better effectiveness from the pill.

Do not increase or decrease the dose, skip the dose or stop the usage of pills before the prescribed span of time.

Side effects

Taking Famvir may stimulate certain side effects.

  • Nausea,
  • stomach pain,
  • weakness, confusion,
  • loss of appetite,
  • vomiting,
  • irregular heartbeat,
  • swelling,
  • weight gain,
  • breathing trouble,
  • diarrhea,
  • headache,
  • dizziness,
  • sleepiness,
  • skin rash.

It is recommended to stop the medication and contact the healthcare provider as soon as possible. Side effects may vary from person to person.

Relative Contraindications

Probenecid, Zovirax, Benemid and Valtrax are a few among the drugs that can interact with Famvir. Consult with the health care provider if a patient has certain medical ailments like liver disease, kidney disease, a weak immune system, and galactose intolerance.

Famciclovir may cause serious hazards to an unborn baby as well as nursing a baby. It is wise not to take the course of therapy during pregnancy or whilst nursing a baby.


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