Dietary Supplement. Free Form Amino Acids for a Higher Absorption Rate* Promote Muscle Growth & Reduce Muscle Wasting*. Nitrogen Balance*. Lean Muscle*. Muscle Repair*. Pharmaceutical Grade Essential Aminos*. Amino Acid Supplements Effective in Increasing Muscle Performance "This study examined 10 weeks of resistance training and the ingestion of supplemental protein and amino acids on muscle performance and markers of muscle anabolism. Nineteen untrained males were randomly assigned to supplement groups containing either 20g protein or 20g dextr.