Just Dx with HSV2 Jan 25 during OB on buttocks. Was given acyclovir which worked immediately with itching and then on day 4 I got severe diarrhea for 5 days (I couldn't stay away from the bathroom longer than 15 min intervals and eventually caused irritation/blood.)I will never take it again! Now only 3 wks later I'm getting another OB. So dr prescribed me valacyclovir, I'm so scared to try it in fear of diarrhea again. But it's so itchy and I get heartburn and leg cramps so bad as well during OB that I'm wanting relief but scared. Are these meds the same? Basically the same name, so I'm scared of same effects.