Description: Valtrex is the first and only once-daily herpes medication clinically proven to reduce the number of outbreaks you may get due to the herpes virus. In a one-year clinical study among people with genital herpes who had six or more outbreaks a year and took Valtrex - at six months, over half were outbreak-free. After one year, a third were outbreak-free. Ask your healthcare provider if daily Valtrex is right for you.