I had no side effects at all while on Vistide. Just began to slowly feel better around month 3 to month 9, continued on for a full year because I had been severe for so long and maybe to ensure we put the bugs down. I went from being mostly bedbound severe and having to be driven to those early appointments, and helped into the clinic, to driving myself after 3 months. I was on it a full year and made approx 60-70% improvement, which I'm very grateful for. I had tested very high viral load of CMV with reactivated EBV. Tested negative several times for other herpes including HHV6&7. I now test negative for CMV with the EBV being back in latency. I'm with Dr P who has seen significant improvements with the drug.