What is methionine?

Methionine is a protein-containing amino acid that aids in metabolism and the breakdown of fat, and is a major source of sulfur in the body. As one of the lipotropic hormone compounds, methionine is also a fat burner or antioxidant, in addition to playing an important role in the removal of heavy metals (such as mercury) from the body. Other roles of this amino acid include ensuring the health of the liver, kidneys, bladder and arteries, as well as maintaining healthy nails, skin and hair. In addition, it is important for muscle growth.

The human body does not naturally produce methionine on its own, and it can only be obtained through food or nutritional supplement intake, and sometimes intravenously when a person is sick. Side effects associated with methionine supplements include nausea, vomiting and drowsiness. Methionine has been known to interact with other medications, so do not mix it with other medications unless approved by your doctor.

Methionine can be found in foods such as red meat, fish, beans and grains, but can also be synthetically produced in nutritional supplements. Pregnant or nursing mothers should not use this amino acid supplement without a doctor's approval. Women taking oral contraceptives can consume the amino acid because it raises estrogen levels, but it is best to consult a doctor beforehand.

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