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Denavir

Brand Names

; Denavir™

Therapeutic Categories

Antiviral Agent

Reasons not to take this medicine

• If you have an allergy to famciclovir, penciclovir or any other part of the medicine.

What is this medicine used for?

• This medicine is used to treat cold sores.

How does it work?

• Penciclovir prevents this virus from functioning normally. Virus reproduction process is stopped.

How is it best taken?

• Do not take by mouth. For skin only. Keep out of mouth, nose, and eyes (may burn).
• Use cream at the first sign of a cold sore.
• Wash your hands before and after use.
• Use a small amount over the area affected as a light film. Rub in gently.

What do I do if I miss a dose?

• Apply a missed dose as soon as possible.
• If it is almost time for the next dose, skip the missed one. Return to your regular schedule.
• Do not apply a double dose or extra doses.
• Do not change dose or stop taking medicine without talking with healthcare provider.

What are the precautions when taking this medicine?

• Tell healthcare provider if you are allergic to any medicine. Make sure to tell about the allergy and how it affected you. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, throat; or any other symptoms involved.
• Tell healthcare provider if you are pregnant or plan on getting pregnant.
• Tell healthcare provider if you are breast-feeding.

What are the common side effects of this medicine?

• Headache. Mild pain medicine may help.
• Redness at site.

What should I monitor?

• Healing of your cold sore.

Reasons to call healthcare provider immediately

• Signs of a life-threatening reaction. These include wheezing; tightness in the chest; fever; itching; bad cough; blue skin color; fits; swelling of face, lips, tongue, or throat.
• Any rash.

How should I store this medicine?

• Store at room temperature.

General statements

• Do not share your medicine with others and do not take anyone else's medicine.
• Keep all medicine out of the reach of children and pets.
• Keep a list of all your medicines (prescription, herbal/supplements, vitamins, over-the-counter) with you. Give this list to healthcare provider (doctor, nurse, pharmacist, physician assistant).
• Talk with healthcare provider before starting any new medicine, including over-the-counter or natural products (herbs, vitamins).