DL-Phenylalanine (DLPA) is an essential amino acid,meaning the body produces it naturally from the diet. All proteins in the body are made from amino acids, which is why amino acids are often referred to as the “building blocks” of proteins. Phenylalanine is one of the eight amino acids indispensable in the diet of man. Boosts emotional enthusiasm Improves workout focus 100% Pure Pharmaceutical Grade Free From, fermented Non-GMO Directions: Adults: Take 1 to 3 capsules daily on an empty stomach, or as directed by your health care practitioner. Consult your health care practitioner for use beyond 3 months. Ingredients: DL-Phenylalanine.................................................500mg Organic, Vegan, Fair Trade, Kosher, Non-GMO