what is valacyclovir

Valacyclovir is an antiviral medication used to treat infections caused by certain types of viruses. It is commonly used to treat herpes virus infections, including herpes labialis (cold sores), herpes zoster (shingles), and genital herpes in adults, as well as chickenpox and cold sores in children. Valacyclovir works by stopping the growth of certain viruses, decreasing the severity and length of outbreaks, helping sores to heal faster, and reducing pain and itching. It is important to take valacyclovir as directed by a healthcare professional and to complete the full prescribed amount of the medication, even if symptoms begin to clear up. Common side effects may include headache, upset stomach, vomiting, diarrhea, or constipation, and it is important to contact a doctor if any severe side effects occur, such as rash, itching, confusion, or fever.