I need to put on some mass, fast. Got the Isopure Mass from a good friend. He said try it and I can make my own judgment call on it. Took this for 2 months and I put on 10 lbs of mass. This is almost a miracle product, because I’ve tried so many others. He gave me the vanilla – so I went out and bought 2 of the vanilla and 2 of the chocolate. Doesn’t give me gas or make my stomach feel queasy like some of the other powders. I was concerned at first, 6 scoops is a lot to try to blend as well as a lot of product. Goes fast, so you better have your wallet open when you buy it. It’s worth the money, though. My friend swears by it and now I do too. They should really come out with more flavors. Chocolate and vanilla are not enough.