I started Valtex in March after having had H for over 30 yrs. I had approx 6 ob's per yr and wanted to take it to zero. At any rate I started having constant prodrome symptoms such as tingling all over glute, thigh and vaginal area and never had prodrome prior to Valtrex. I transitioned straight to acyclovir from Valtrex and all that is completely gone in two weeks time.
I know that it's not a side effect at all ( tingling) for Valtrex. I even called the FDA and put it in the list of side effects after reading about similar symptoms from others on Valtrex. I was also having vulva pain. It's all completely gone so I don't know if it was the way it's metabolized in my body or what. Just wanted to share.