I've had great success with taking Valacyclovir both the branded medication (Valtrex) and also the generic version from Cipla (Valcivir). Recently i purchased some generic Valtrex from www.4rx.com thinking it would be the Cipla version, however the tablets they sent me were a product called Genvir which is supposedly the same. However they did not work for me. After a week of taking them my symptoms started coming back with a vengeance. So this either means that the tablets are not effective as other brands or they were fake. I've read other posts on here from people who have ordered from 4rx.com (hence why i used them) and wondered if they had any similar experiences? or if anyone knows whether different generics are more effective than others? I thought they were all supposed to be the same? I now request the Cipla brand when i order as these seem to be the most effective generic for me.