Zovirax
Zovirax (acyclovir) is a synthetic nucleoside analogue antiviral drug active against herpesviruses. It works by inhibiting viral DNA synthesis and replication, helping to reduce the severity and duration of outbreaks and symptoms.
Dosage by Body Weight
Adult dosage typically ranges from 200 mg to 800 mg taken 2 to 5 times daily for 5 to 10 days, depending on the type and severity of the infection. Ensure high fluid intake during therapy to prevent renal complications.
- Body Weight
- Below 5 kg
- Dose
- Not routinely recommended
- Frequency
- Use only if prescribed
- Tracking Notes
- Safety and efficacy for infants have not been fully established; use strictly under specialist supervision.
- Body Weight
- 5-7 kg
- Dose
- 100 mg to 120 mg (calculated at 20 mg/kg)
- Frequency
- 4 times daily for 5 days
- Tracking Notes
- Commonly dosed for chickenpox using the oral suspension formulation.
- Body Weight
- 8-10 kg
- Dose
- 160 mg to 200 mg (calculated at 20 mg/kg)
- Frequency
- 4 times daily for 5 days
- Tracking Notes
- Ensure precise measurement using a syringe or dosing cup.
- Body Weight
- 11-15 kg
- Dose
- 220 mg to 300 mg
- Frequency
- 4 times daily for 5 days
- Tracking Notes
- Dosage is based on 20 mg/kg up to a maximum of 800 mg per dose.
- Body Weight
- 16-20 kg
- Dose
- 320 mg to 400 mg
- Frequency
- 4 times daily for 5 days
- Tracking Notes
- Adjust dosage based on the clinical response and tolerability.
| Body Weight | Dose | Frequency | Tracking Notes |
|---|---|---|---|
| Below 5 kg | Not routinely recommended | Use only if prescribed | Safety and efficacy for infants have not been fully established; use strictly under specialist supervision. |
| 5-7 kg | 100 mg to 120 mg (calculated at 20 mg/kg) | 4 times daily for 5 days | Commonly dosed for chickenpox using the oral suspension formulation. |
| 8-10 kg | 160 mg to 200 mg (calculated at 20 mg/kg) | 4 times daily for 5 days | Ensure precise measurement using a syringe or dosing cup. |
| 11-15 kg | 220 mg to 300 mg | 4 times daily for 5 days | Dosage is based on 20 mg/kg up to a maximum of 800 mg per dose. |
| 16-20 kg | 320 mg to 400 mg | 4 times daily for 5 days | Adjust dosage based on the clinical response and tolerability. |
Formulation
TabletCapsuleSuspensionCreamOintment
Purpose
Treatment of infections caused by herpes simplex virus (such as genital herpes and cold sores), shingles (herpes zoster), and chickenpox (varicella).
Generic Name
AcyclovirScheduled Drug
Yes. This medicine should be supplied or used only according to applicable prescription and regulatory requirements.