I was looking to try post exercise protein shake and chose this after some research. To early to say regarding impact but it mixes easily and the taste is pleasant so happy to carry in and see results. The tone drink seems okay. Taste is a bit bitter. Used it a couple of times now so will see impact regarding continuing. I have tried the capsules once and got very significant heartburn. I will probably try again but I could find no side effects information which would be helpful. I did follow the directions. I'm pretty well informed regarding health and button but always keen to try and explore more. Will see progress with time