IRON KINGDOM PLANT PROTEIN BUILD / REPAIR / RECOVERY FORMULA PREMIUM PLANT BASED PROTEIN ATHELETE APPROVED PREMIUM PLANT PROTEIN contains five sources of plant-based protein: Pea Protein, Organic Pumpkin Seed Protein, Organic Brown Rice Protein, Sunflower Seed Protein, and Quinoa Protein. Combining multiple sources of plant-based proteins provides a superior amino acid profile. BCAAs Branched Chain Amino Acids (BCAAs) stimulate protein synthesis, promote muscle growth, help reduce the breakdown of muscle cells, and minimize muscle fatigue, soreness, and recovery time.