L-Phenylalanine

Phenylalanine is an amino acid. There are three forms: L-, D-, and DL- phenylalanine. L-phenylalanine is found naturally in foods such as meat and eggs. D-phenylalanine is not an essential amino acid, and its role in the body is not currently understood. DL-phenylalanine is made in a lab.L-Phenylalanine is an essential aromatic amino acid in humans (provided by food), Phenylalanine plays a key role in the biosynthesis of other amino acids and is important in the structure and function of many proteins and enzymes.