Valacyclovir Tablets USP are an antiviral medication used to treat infections caused by certain viruses. Commonly prescribed for conditions like herpes simplex (cold sores and genital herpes), shingles (herpes zoster), and chickenpox, valacyclovir works by inhibiting viral replication, which helps reduce the severity and duration of outbreaks. Typically taken orally, the dosage and duration depend on the specific condition being treated and are prescribed by a healthcare professional. Common side effects include headache, nausea, and dizziness. It’s important to complete the full course of treatment as directed to effectively manage the infection. Always follow your doctor’s instructions for proper use and consult them if you experience any severe side effects or have other health concerns.