I do a lot of research on products before I spend my money on them. I am reading that aminos are making the protein powders obsolete. I have no expectations before beginning a new product, so I was pleasantly surprised when I began to see and feel a difference! I noticed it first in my forearms. My skin smoothed out (ever so slightly), the little jiggle I was starting to see was tightening up. My ankles and feet didn’t hurt as bad. Then I ran out. So as soon as it fits into my budget, I will purchase a larger quantity. Thank you Advanced Bio.