Essential Amino Acid (EAA) supplements contain the nine amino acids your body cannot produce on its own: leucine, isoleucine, valine, lysine, threonine, phenylalanine, methionine, histidine, and tryptophan. While branched-chain amino acids (BCAAs) are popular, EAA supplements are often considered more effective for muscle protein synthesis because they provide all the necessary "building blocks" rather than just a subset. AMINOS | BCAA + EAA + HYDRATION + ELECTROLYTES