SUPPORTS MUSCLE RECOVERY AND HYDRATION When it comes to maintaining and building new muscle mass, the nine essential amino acids are literally essential. & NBSP; This group of amino acids cannot be synthesized within our body; they must be obtained from nutritional sources. & NBSP; R1 essential amino 9 delivers 7.5 grams of the 9 essential amino acids with added electrolytes for hydration. Transparent formula Zero added sugar Zero gluten sp; & nn bsp; Zero B.S.