Pure Encapsulations BCAAPure Encapsulations BCAA Pure Encapsulations BCAA contains three types of branched chain essential amino acids. These amino acids help support muscle mass, post exercise recovery, healthy energy utilization during exercise, and healthy liver function.* BCAA may also help support mental performance during your workouts.* Best of all, this potent dose of BCAA is ideal for daily use. Ideal for Athletes: Supports muscle function during exercise*