Gnc Amp Gold Series Bcaa Advanced Orange Powder is used for supporting muscle recovery and promoting energy and stamina. It includes branched-chain amino acids (BCAAs) such as L-leucine, L-isoleucine, and L-valine, which can help manage muscle recovery and growth. The formula includes L-glutamine, which may support muscle repair and immune health, and L-citrulline can help support blood flow and reduce fatigue. This powder may improve workout results by reducing muscle soreness and boosting energy levels.