Solgar L-Methionine 500 mg Vegetable Capsules is one of Solgars premium-quality amino acid range products, containing L-Methionine, a sulphur-containing amino acid.Amino acids are the building blocks of protein and are needed in several internal functions of the body. They are classified as essential or non-essential, with essential amino acids meaning they cannot be manufactured by the body and must be supplied in the diet to maintain good all-round health. Amino acids can be further used by the body to create hormones, enzymes, neurotransmitters, antibodies and nutrient carriers. A suboptimal intake of the essential amino acids increases the bodys need for the non-essential amino acids either through diet or supplementation. Foods that increase amino acid intake are meat, beans, cheese and eggs.