I have been experimenting lately. I have been on Cystoprotek since April of 2006, and although it helped some it hasn't helped enough so I am trying to take 2 Cystoprotek in the am, and 1 Cysta Q in the PM to see how I fare. I have to admit that the Cysta Q seemed to help more, but I still flare, but I've only been trying this for a few days now. I'm thinking of trying just Cysta Q to see the difference. I hope I don't regret it!!