Valacyclovir is an antiviral drug. It slows the growth and spread of the herpes virus so that the body can fight off the infection. Valacyclovir will not cure herpes, but it can lessen the symptoms of the infection. Valacyclovir is used to treat infections caused by herpes viruses in adults and children. Illnesses caused by herpes viruses include genital herpes, cold sores, shingles, and chickenpox. Valacyclovir is used to treat cold sores in children who are at least 12 years old, and to treat chickenpox in children who are at least 2 years old. Valacyclovir may also be used for other purposes not listed in this medication guide.
Valtrex is an orally ingested tablet used to treat certain kinds of viral infections, especially herpes. It is effective for both children and adults.