Famciclovir (By Mouth)

Famciclovir (fam-SYE-kloe-veer)

Treats herpes zoster (shingles). Belongs to a class of drugs called antivirals.

Brand Name(s):

Famvir
There may be other brand names for this medicine.

When This Medicine Should Not Be Used:

You should not use this medicine if you have ever had an allergic reaction to famciclovir. Tell your doctor if you have had an allergic reaction to acyclovir (Zovirax®), valacyclovir, or ganciclovir.

How to Use This Medicine:

Tablet

• Your doctor will tell you how much to take and how often.
• Take this medicine exactly as your doctor ordered.
• May be taken with or without food.

If a dose is missed:

• Take your medicine as soon as you remember that you have missed your dose.
• If it is almost time for your next dose, wait until then to take your medicine and skip the missed dose.
• You should not use two doses at the same time.

How to Store and Dispose of This Medicine:

• Keep taking the medicine on schedule until the tablets are gone, or until your doctor tells you to stop.
• Store at room temperature, away from heat, direct light, and moisture.
• Keep all medicine out of the reach of children.

Drugs and Foods to Avoid:

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

Warnings While Using This Medicine:

• Check with your doctor before taking famciclovir if you have kidney disease or if you are pregnant or breastfeeding.
• Famciclovir may cause drowsiness or dizziness. Be careful when driving or operating machinery.

Possible Side Effects While Using This Medicine:

Call your doctor right away if you notice any of these side effects:

• Rash or hives
• Trouble breathing
• Tightness in chest
• Swelling in the face

If you notice these less serious side effects, talk with your doctor:

• Headache
• Tiredness
• Nausea
• Diarrhea

If you notice other side effects that you think are caused by this medicine, tell your doctor.