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Read information about Famciclovir below to learn about its common uses. If you have questions about this medicine, please consult with your doctor or pharmacist and be sure to inform them of all the medications you are currently taking.
- Use this medicine as directed by your doctor. Check the label on the medicine for exact dosing instructions.
- An extra patient leaflet is available with this medicine. Talk to your pharmacist if you have questions about this information.
- Take this medicine by mouth with or without food. If stomach upset occurs, take with food to reduce stomach irritation.
- If you are treating genital herpes or cold sores, start using this medicine at the first sign of an outbreak or cold sore (eg, tingling, itching, burning, pain, lesion) as directed by your doctor.
- If you are treating shingles, cold sores, genital herpes, or herpes skin infection, take this medicine for the full course of treatment. Keep taking it even if you feel better in a few days.
- If you are using this medicine to suppress genital herpes, continue to take this medicine even if you feel well. Do not miss any doses.
- If you miss a dose of this medicine, take it as soon as possible. If it is almost time for your next dose, skip the missed dose. Go back to your regular dosing schedule. Do not take 2 doses at once.
- Ask your health care provider any questions you may have about how to use this medicine.
- All medicines may cause side effects, but many people have no, or minor, side effects.
- Diarrhea; gas; headache; nausea; tiredness; vomiting.
- Severe allergic reactions (rash; hives; itching; difficulty breathing or swallowing; tightness in the chest; swelling of the mouth, face, lips, throat, or tongue; unusual hoarseness); change in the amount of urine produced; confusion; delirium; disorientation; hallucinations; red, swollen, blistered, or peeling skin; unusual bruising or bleeding; yellowing of the eyes or skin.
- This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch