Valacyclovir Side Effects
What Is the Most Common Side Effect of Valacyclovir?

Discover the most common side effect of valacyclovir, including headache, nausea, and dizziness, and when to seek medical advice.

Avoiding Acyclovir
When Is Acyclovir Contraindicated? Important Safety Guidelines

Learn when acyclovir is contraindicated, including hypersensitivity and renal concerns, to ensure safe antiviral use.