On a mostly plant-based diet, it's not easy to get adequate protein, especially now in my mid-70's when I need to keep up my muscle tone. My body warns me when I haven't had enough protein by giving me tuna cravings. I don't mind eating tuna occasionally, but not often because of the mercury. Since I've been taking Advanced Amino, five tablets daily for about eight months, I don't get the protein cravings. That's why I reordered. I think the amino acids are causing my body to make its own protein.
Since I take it before bed, I also experienced a brief period of help with sleep, but that didn't last.