I have totally heard of VEMMA. In fact, I used to take Xango as it was helping with my arthritus pain. I switched to vemma because it was a much more complete program. Even though I was already taking Mangosteen I noticied a huge difference right away. It also has aloe, green tea, vitamins and minerals. My doctor was the one who told me about it. He told me that it has something like ten times more mangosteen than what I was taking. Overall it even costs a lot less. I was taking up to six bottles a month with the other. With this I feel better, I am getting more and it costs less. I even have my kids taking it and they love the taste. It is great to have something they actually like too.