Valacyclovir comes as tablet that you swallow. In most cases, it’s used as a short-term treatment option. But in some cases, your doctor may recommend that you take the drug long term. This article ...

Valacyclovir is a generic drug that’s prescribed for certain viral infections in adults and certain children. As with other drugs, valacyclovir can cause side effects, such as headache and nausea.

Valtrex (valacyclovir) is a brand-name oral tablet that’s prescribed to treat or prevent certain viral infections, including cold sores, genital herpes, shingles, and chickenpox. The cost of the drug, ...