Pharmaceutical Grade Amino Acids in Liquid, Powder and pill forms. Body builders know amino acids strengthen muscles and increase endurance but that’s not all they do. Discover the benefits of amino acid supplements. Amino acids are the basic building blocks of the body. They regulate almost all metabolic processes and are essential for a healthy body. Body builders and athletes know amino acids increase muscle strength and endurance but they are responsible for more. Amino acids work together to influence mood, reduce stress and boost immunity in your body. Essential amino acids cannot be manufactured by the body and must come from diet or supplements. Check with our knowledgeable and experienced staff for essential amino acid supplements in capsule, powder and liquid forms.