Famciclovir
Famciclovir is an antiviral drug. It is a prodrug of penciclovir, active against Herpes simplex virus types 1 (HSV-1) and 2 (HSV-2), and Varicella-zoster virus (VZV). It works by interfering with viral DNA synthesis and replication.
Dosage by Body Weight
The usual adult dose ranges from 250 mg to 500 mg, taken two to three times daily depending on the specific viral infection and the patient's renal function. Treatment should be initiated at the first sign or symptom of infection. Dosage must be adjusted in patients with renal impairment.
- Body Weight
- Below 5 kg
- Dose
- Not recommended
- Frequency
- Not applicable
- Tracking Notes
- Safety and efficacy of famciclovir in pediatric patients under 18 years of age have not been established.
- Body Weight
- 5-7 kg
- Dose
- Not recommended
- Frequency
- Not applicable
- Tracking Notes
- Safety and efficacy of famciclovir in pediatric patients under 18 years of age have not been established.
- Body Weight
- 8-10 kg
- Dose
- Not recommended
- Frequency
- Not applicable
- Tracking Notes
- Safety and efficacy of famciclovir in pediatric patients under 18 years of age have not been established.
- Body Weight
- 11-15 kg
- Dose
- Not recommended
- Frequency
- Not applicable
- Tracking Notes
- Safety and efficacy of famciclovir in pediatric patients under 18 years of age have not been established.
- Body Weight
- 16-20 kg
- Dose
- Not recommended
- Frequency
- Not applicable
- Tracking Notes
- Safety and efficacy of famciclovir in pediatric patients under 18 years of age have not been established.
| Body Weight | Dose | Frequency | Tracking Notes |
|---|---|---|---|
| Below 5 kg | Not recommended | Not applicable | Safety and efficacy of famciclovir in pediatric patients under 18 years of age have not been established. |
| 5-7 kg | Not recommended | Not applicable | Safety and efficacy of famciclovir in pediatric patients under 18 years of age have not been established. |
| 8-10 kg | Not recommended | Not applicable | Safety and efficacy of famciclovir in pediatric patients under 18 years of age have not been established. |
| 11-15 kg | Not recommended | Not applicable | Safety and efficacy of famciclovir in pediatric patients under 18 years of age have not been established. |
| 16-20 kg | Not recommended | Not applicable | Safety and efficacy of famciclovir in pediatric patients under 18 years of age have not been established. |
Formulation
Purpose
Treatment of herpes zoster (shingles), treatment of recurrent herpes simplex infections (genital herpes and cold sores), and suppression of recurrent genital herpes.
Generic Name
FamciclovirBranded Drug Names
Famciclovir is listed as a generic drug name. Common branded medicines that may contain the same active ingredient include:
Scheduled Drug
Yes. This medicine should be supplied or used only according to applicable prescription and regulatory requirements.