Valaciclovir, a class of antiviral medication used to treat viral infections, is contained in Valcivir-500 Tablet 3. It is essential in the treatment of cold sores (an inflamed blister in or near the mouth caused by herpes simplex virus infection), genital herpes (a common sexually transmitted infection characterised by genital pain and sores), and herpes zoster (a viral infection that causes a painful rash).Disclaimer:For More Information Contact Your Physician