L-(-)-Methionine en es it fr

L-(-)-Methionine Brand names, L-(-)-Methionine Analogs

L-(-)-Methionine Brand Names Mixture

  • No information avaliable

L-(-)-Methionine Chemical_Formula


L-(-)-Methionine RX_link

No information avaliable

L-(-)-Methionine fda sheet

L-(-)-Methionine msds (material safety sheet)


L-(-)-Methionine Synthesis Reference

No information avaliable

L-(-)-Methionine Molecular Weight

149.207 g/mol

L-(-)-Methionine Melting Point

276-279 oC

L-(-)-Methionine H2O Solubility

No information avaliable

L-(-)-Methionine State


L-(-)-Methionine LogP


L-(-)-Methionine Dosage Forms

Capsules, powder and tablets

L-(-)-Methionine Indication

Used for protein synthesis including the formation of SAMe, L-homocysteine, L-cysteine, taurine, and sulfate.

L-(-)-Methionine Pharmacology

Is a principle supplier of sulfur which prevents disorders of the hair, skin and nails; helps lower cholesterol levels by increasing the liver's production of lecithin; reduces liver fat and protects the kidneys; a natural chelating agent for heavy metals; regulates the formation of ammonia and creates ammonia-free urine which reduces bladder irritation; influences hair follicles and promotes hair growth. L-methionine may protect against the toxic effects of hepatotoxins, such as acetaminophen. Methionine may have antioxidant activity.

L-(-)-Methionine Absorption

Absorbed from the lumen of the small intestine into the enterocytes by an active transport process.

L-(-)-Methionine side effects and Toxicity

Doses of L-methionine of up to 250 mg daily are generally well tolerated. Higher doses may cause nausea, vomiting and headache. Healthy adults taking 8 grams of L-methionine daily for four days were found to have reduced serum folate levels and leucocytosis. Healthy adults taking 13.9 grams of L-methionine daily for five days were found to have changes in serum pH and potassium and increased urinary calcium excretion. Schizophrenic patients given 10 to 20 grams of L-methionine daily for two weeks developed functional psychoses. Single doses of 8 grams precipitated encephalopathy in patients with cirrhosis.

L-(-)-Methionine Patient Information

There are no indications for the use of supplemental methionine unless specifically recommended by a physician. It is effective as an antidote in some cases of acetaminophen poisoning. But, because some research suggests that it may promote some cancers, its use as a supplement is inadvisable.

L-(-)-Methionine Organisms Affected

Humans and other mammals