Valacyclovir

A prodrug that is converted to acyclovir in the body. It has better absorption, allowing for less frequent dosing than acyclovir.

Dosage by Body Weight

For chickenpox (ages 2-18): 20 mg/kg three times daily for 5 days. Max 1000 mg per dose.

Weight-based dosage tracking table for Valacyclovir, including body weight, dose, frequency, and tracking notes.
Body Weight	Dose	Frequency	Tracking Notes
15-25 kg	500 mg	Three times daily	Start treatment at the first sign of symptoms.

Tablet

Treatment of herpes virus infections, including cold sores and chickenpox.

Valacyclovir is listed as a generic drug name. Common branded medicines that may contain the same active ingredient include:

Yes. This medicine should be supplied or used only according to applicable prescription and regulatory requirements.

CAUTION

Valacyclovir: Alcohol may worsen dizziness, nausea, dehydration, or liver strain during antiviral treatment. Avoid or limit alcohol.

SAFE IF PRESCRIBED

Valacyclovir: Use during pregnancy only when prescribed; treatment may be important for maternal infection control or prevention of transmission.

SAFE IF PRESCRIBED

Valacyclovir: Breastfeeding advice depends on the infection and treatment regimen. Use only with healthcare provider guidance.

CAUTION

Valacyclovir: May cause dizziness, fatigue, sleep disturbance, or headache. Avoid driving if alertness is affected.

CAUTION

Valacyclovir: Some antivirals can affect liver function or require monitoring in hepatitis, HIV, or severe illness.

CAUTION

Valacyclovir: Several antivirals are cleared by the kidneys and may need dose adjustment or hydration. Consult your healthcare provider.