Are there any other options for treating herpes viruses other than the drugs that are all chemically similar- Acyclovir, famciclovir, valacyclovir and Valganciclovir. All the the "-ovir" drugs I took either caused ADR or it could have been a matter of dosing. But even 1gram of Valtrex I took for a cold sore outbreak made me violently ill and give terrible kidney pain despite drinking copious amounts of water and taking with food. Years ago I was on the full high dose Valtrex treatment for EBV @ 4 grams a day. Famvir gave me horrible muscle pains. I took Valcyte in the past as well. I am wondering if there is something about all of these "-ovir" drugs which I my body doesn't like. Anything else effective against EBV/HHV-6a?