Typical amino acid supplements only contain the three branch chain amino acids (BCAAs) consisting of Leucine, Isoleucine, and Valine. While there’s nothing wrong with BCAA supplements, they’re simply not the full spectrum of amino acids needed for proper protein synthesis and repair.
Essential Amino Acids (EAA’s), on the other hand, contain the entire range of amino acids your body demands when it needs to build new tissue. EAAs are called "essential" because the body cannot synthesize them on its own. You MUST obtain them through food or supplements.
Furthermore, most individuals aren’t eating a diverse enough diet, and therefore miss out on crucial EAA-rich foods. Plus, some may be eating a well-balanced diet, but may not be absorbing the nutrients properly. Either way, the end result is EAA deficiency and lack of gains!
EAAs not only stimulate protein synthesis, but they support energy production and cellular repair. Additionally, EAAs are needed for complete and healthy digestion and nutrient absorption.