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Famvir250 mg
SANDOZ (A Novartis Division)
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Generic medicine
Famciclovir: Brands, Price & Uses in Bangladesh
Famciclovir is an antiviral medicine indicated for the treatment and management of specific herpesvirus infections.
About Famciclovir
Indications of Famciclovir
Famciclovir is an antiviral medicine indicated for the treatment and management of specific herpesvirus infections. Indications are classified below by strength of evidence.
FDA-Approved / Established Indications
- Herpes zoster (shingles): Treatment of acute herpes zoster in immunocompetent adults.
- Genital herpes: Treatment of initial and recurrent episodes of genital herpes in immunocompetent adults.
- Suppressive therapy: Chronic suppression of recurrent episodes of genital herpes in immunocompetent adults.
- Recurrent orolabial or genital herpes in HIV-infected patients: Treatment of recurrent mucocutaneous herpes simplex infections in HIV-positive adults.
- Herpes labialis (cold sores): Treatment of recurrent episodes in immunocompetent adults.
Off-Label / Adjunct Use
Famciclovir is sometimes used off-label for varicella (chickenpox) in select adult patients and for herpes simplex prophylaxis in certain immunocompromised settings, based on clinician judgment; this is not an FDA-approved use and should only be undertaken under specialist supervision.
Dosage & Administration of Famciclovir
Dosage of Famciclovir is individualized according to the indication being treated. The table below summarizes standard adult dosing in patients with normal renal function.
| Indication | Adult Dose | Duration |
|---|---|---|
| Herpes zoster (shingles) | 500 mg every 8 hours | 7 days |
| Genital herpes, initial episode | 250 mg three times daily | 7–10 days |
| Genital herpes, recurrent episode | 1000 mg twice daily | 1 day |
| Genital herpes, suppressive therapy | 250 mg twice daily | Up to 1 year, per physician review |
| Recurrent orolabial/genital herpes in HIV-infected patients | 500 mg twice daily | 7 days |
| Herpes labialis (cold sores) | 1500 mg as a single dose | Single day |
Renal impairment: Dose and/or dosing interval must be reduced according to creatinine clearance; see Use in Special Populations. Famciclovir should be started as early as possible after the onset of symptoms (e.g., within 48–72 hours of rash or lesion onset) for best effect.
Famciclovir may be taken with or without food. Tablets should be swallowed whole with water; complete the full course as directed by the physician and do not stop, extend, skip doses, or share this medicine with others without medical advice.
Side Effects of Famciclovir
Common (may affect more than 1 in 10 people, indication-dependent)
- Headache
- Nausea
Less Common
- Diarrhea
- Vomiting
- Fatigue
- Paresthesia (tingling/numbness)
- Dizziness
Rare but Serious
- Hypersensitivity reactions, including rash, urticaria, and rarely angioedema or anaphylaxis (see Contraindications and Precautions)
- Confusion or hallucinations, reported mainly in elderly patients or those with renal impairment receiving inappropriately high doses
Patients should seek prompt medical attention if signs of a severe allergic reaction or unusual neurological symptoms occur while taking Famciclovir.
Contraindications of Famciclovir
Famciclovir is contraindicated in patients with known hypersensitivity to Famciclovir, penciclovir, or any component of the formulation.
Frequently Asked Questions about Famciclovir
What is Famciclovir used for?
Famciclovir is an antiviral medicine used to treat herpes zoster (shingles), genital herpes (initial and recurrent episodes, including long-term suppression), herpes labialis (cold sores), and recurrent herpes infections in people with HIV.
How quickly should I start taking Famciclovir after symptoms appear?
Famciclovir works best when started as early as possible after the first signs of an outbreak, such as tingling, pain, or the appearance of lesions or rash, ideally within 48–72 hours of onset.
Can Famciclovir be taken with food?
Yes, Famciclovir may be taken with or without food. Swallow the tablet whole with water and complete the full course exactly as prescribed by your physician.
Is Famciclovir safe during pregnancy or breastfeeding?
Famciclovir should be used in pregnancy only if clearly needed, when the potential benefit outweighs potential risk to the fetus, and only under medical advice. Its safety during breastfeeding is not fully established, so a physician should be consulted before use while nursing.
What are the common side effects of Famciclovir?
The most commonly reported side effects of Famciclovir are headache and nausea; less commonly, diarrhea, vomiting, fatigue, tingling sensations, and dizziness may occur. Serious allergic reactions are rare but require immediate medical attention.
Does Famciclovir need a dose adjustment for kidney problems?
Yes. Patients with reduced kidney function require a lower dose or a longer interval between doses of Famciclovir, because inappropriately high doses in this setting have been linked to acute kidney injury and confusion. Always inform your physician of any kidney condition before starting Famciclovir.
Disclaimer
The information provided is accurate to the best of our knowledge, but it does not replace professional medical advice. We cannot guarantee its completeness or accuracy, and the absence of specific information about a drug should not be taken as an endorsement. We are not responsible for any consequences arising from this information, so please consult a healthcare professional for any concerns or questions.