Next to protein, amino acid supplements may be the most important supplement for all bodybuilders. And when it comes to the various aminos, few others can compare to the importance of branched-chain amino acids (BCAAs) and BCAA 2000. In fact, for the bodybuilder, BCAA 2000 may very well be the most important amino acid product you ever buy. There´s nothing fancy or trendy about BCAA 2000. Over the years, the BCAAs found in BCAA 2000 have been studied extensively for their dual anabolic and anti-catabolic activities.