Valtrex is an antiviral drug used to treat infections caused by herpes viruses, including shingles, according to Drugs.com. While Valtrex does not cure shingles, it reduces the symptoms and lessens the risk of complications.
The shingles rash lasts between two and six weeks on average, states Mayo Clinic. There is no cure for it, but antiviral drugs slow the growth of the virus to help the body fight it.
A common symptom of shingles rash is severe pain, which may require other treatments in addition to antiviral drugs, notes Mayo Clinic. These can include numbing agents, pain medications and injections of local anesthetics. Recommended home remedies are cool baths and stress management.