Hi all! I was initially prescribed Valtrex @ 1g., 3x/day for CEBV (currently reactivated). My pharmacy filled it with the generic equivalent by Mylan. I took 1 dose and felt as if my heart was beating much too hard, if that makes sense...not just fast but pounding in a way that made it uncomfortable (especially while laying down). Fyi, I have normal-low BP (normally 105-112/70's) & am on the thin side. I called my specialist and was instructed to lower the dose of Valtrex to 500 mg, 2x a day for appx. 2 weeks & then titrate back up to the original dosage. This time I asked for the Valtrex brand pills only and pharmacy got them in this week for me. Can they be cut safely? I want to try starting on 1/4 pill. Also, I was rx'ed Zantac @ 300 mg, 2x/day & was told to take 1 before each dose of the Valtrex. The protocol = Take 300 mg/Zantac pill. Eat a FULL MEAL. Afterwards, take 1 dose of Valtrex. Does Zantac work synergistically with the Valtrex somehow? I thought I saw a mention of that on another thread, perhaps...? I am afraid to take the Valtrex after my initial reaction even at the new lowered dose. My specialist has no distinct preference for Valtrex over Famvir, by the way, and uses either to address CEBV. Suggestions?