Description_x000D_ General description_x000D_ DL-Methionine is an essential amino acid containing sulphur. Methionine consists of an asymmetric carbon and exists as D (dextrogyre) and L (levogyre) optical isomers. The L-methionine is considered as biologically active. The racemic mixture of D and L-isomers forms DL-methionine, which is the commercially available methionine._x000D_ Application_x000D_ DL-Methionine has been used to study its effect on the growth and feed utilization of Nile tilapia. It has also been used as a part of standard diet in animal models._x000D_ Packaging_x000D_ 1 kg in poly bottle_x000D_ 100, 500 g in poly bottle_x000D_ Biochem/physiol Actions_x000D_ DL-Methionine is an amino acid that has a role in the defence of oxidative stress._x000D_ Methionine offers protection against disorders related to hair, skin and nails. It elevates lecithin production in the liver and thereby reduces cholesterol level. It naturally serves as a heavy metal chelating agent, regulating ammonia concentration in the urine. This ameliorates bladder irritation. Methionine is also known to induce hair growth.