I took "CELLMASS" (exactly as directed on the label and website) for three months in addition to my regular workout routine and regular protein / casein shakes. The only thing I changed was drinking even more water. In retrospect I can say that it did increase my lifting ability slightly, and I felt no negative side effects. After I stopped taking it there was no decrease in my weight even two months later. (I gained weight during those three months, but then again I was eating lots throughout the day and surprised that I didn't gain much more.) I feel that it was more of a psychological aid to get me through one more plateau. I don't feel that it is necessary anymore and won't use it again.