I'd like to respond to those who say they are having trouble dissolving this and about the taste. From the 1st time I used it, I mixed it with blueberry pomegranate juice. I have no trouble dissolving it; I just stir very vigorously and it dissolves fine. As for the leftover in the bottom, I swirl it as I drink it and, if there is some in the bottom, I add a touch of water and swirl and then drink it down, no problem. Being as it is blueberry, the juice just adds to the flavor. I don't use ice, I just keep the juice in the fridge so it is cold.
I have had foot surgery since I began taking this, it has only been 5 weeks and I am back in shoes already. I have noticed better health and a big change in chronic back pain, due to a fall 16 and 1/2 years ago, that has kept me in bed 90% of the time, due to fibromyalgia that came with the injury. I find that I am having less pain and more "good" days and, believe me, that's saying something.
I started taking this without any real expectation of much change. I have been pleasantly surprised.
I would definitely recommend to a friend.
Bottom Line: Yes, I would recommend this to a friend