Methionine is an essential amino acid to be obtained from the diet. As for other essential amino acids, chief sources are animal and plant proteins. Methionine is another sulfur-containing amino acid used for the synthesis of bile acids, the amino acids carnitine, choline, creatine, cysteine and taurine, various endorphines, while its sulfur content is utilized in growth and metabolism.


  • Antioxidant by transformation to cysteine
  • Bladder infections
  • Helps the repair of joints
  • Important factor for healthy hair, nails and skin
  • Improves the detoxification of the liver
  • Lipotropic agent reducing liver fat
  • Possesses anti-allergic properties
  • Reduces high estrogen levels
  • Reduces psychological complications caused by high histamine levels

Methionine is better taken together with folic acid, vitamin B6 (pyridoxine) and vitamin B12 (cobalamin).

Considered generally safe.