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CAS: 63-68-3
Molecular weight: 149.211
Purity: > 99%
Solubility: Soluble in 1 M HCl to 100 mM
Certificates: US NOP organic and EU organic certificate, Kosher, Halal, ISO, QS
OEM: Customized order packaging and labels; OEM capsules and pills




Product Description

Methionine is an essential amino acid found in meat, fish, and dairy products. Amino acids are the building blocks used to make proteins.

L-methionine is the L-enantiomer of methionine. It has a role as a nutraceutical, a micronutrient, an antidote to paracetamol poisoning, a human metabolite and a mouse metabolite. It is an aspartate family amino acid, a proteinogenic amino acid, a methionine and a L-alpha-amino acid. It is a conjugate base of a L-methioninium. It is a conjugate acid of a L-methioninate. It is an enantiomer of a D-methionine. It is a tautomer of a L-methionine zwitterion.

L-methionine is a sulfur-containing essential L-amino acid that is important in many body functions. Methionine is a dietary indispensable amino acid required for normal growth and development of humans, other mammals, and avian species. In addition to being a substrate for protein synthesis, it is an intermediate in transmethylation reactions, serving as the major methyl group donor.It must be obtained from diet and food sources since it is unable to be biosynthesized in the body. The minimum daily requirement of L-methionine for an adult male is 13 milligrams per kilogram of body weight. This quantity is normally easy to obtain from a complete diet.

Solubility Water
Physical Form Solid
Other Notes Plant Tissue Culture Tested
Product Number M539
CAS Number 63-68-3
Formula Weight 149.21
Formula C5H11NO2S
Synonyms (S)-2-amino-4-(methylthio)butanoic Acid

L-Methionine Nutrition Facts:

Supplement Facts

Active Ingredient(s): L-methionine

Alternate Name(s): L-methionine, D-methionine, DL-methionine, L-2-amino-4-(methylthio) butyric acid

Legal Status: Legal in the United States and sold over-the-counter (OTC)

Suggested Dose: No standard dose for methionine exists.

Safety Considerations: Methionine has potential side effects, including dizziness, upset stomach, and drowsiness. It is possible to overdose on methionine.


Essential aminoacid for human development. Hepatoprotectant; antidote (acetominophen poisoning); urinary acidifier.


methionine is slows down and normalizes oil gland sebum production. Methionine is also used as a texturizer in cosmetic creams. It is an essential amino acid found in a number of proteins and obtained by means of fermentation.


L-Methionine is used as an essential amino acid for human development and therapeutically acts as an antidote for acetaminophen poisoning. It serves as a chelating agent for heavy metals, as a flavoring agent and nutritional supplement for foods. It acts as a feed additive, vegetable oil enrichment and as a single cell protein. In addition to this, it is used as a hepatoprotectant and also acts as a lipotropic agent and prevents excess fat buildup in the liver.

Benefits & Features

Nutritional supplements. One of the essential amino acids of the human body. Because the price is higher than DL-methionine and the results are equal, so commonly used DL-methionine.

For biochemical studies and nutritional supplements, and as adjunctive treatment for pneumonia, liver cirrhosis and fatty liver.

Organic Pleurotus Extract Powder/Oyster Mushroom Extract Powder Application

1. Applied in the food feild, to be used as food additive added into various dishes;
2. Applied in the health product field, it can be made into capsules, tablets, injection, to adjust the immune system and strengthen the health of body;
3. Applied in the pharmaceutical field, it can inhibit a variety of tumors and cure viral hepatitis.

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Why Yhealth Powder?

Yhealth has been focusing on the production and development of plant extracts for many years. We provide the products for the food market at competitive prices.

Our products undergo rigorous independent testing to ensure that they are safe to eat around the world.

How To Buy L-Methionine Powder?

Just send an email to [email protected] , or submit your needs at the bottom, we’re here for you!

Logo Design: Yes,We can supply the OEM bag shipping to Amazon directly.  Bulk, bottles, blister packs or customers’ requirement 1 kg/bags

Customized Formulas: Yes ,We supply Custom formulation bag/capsule with private label.

Brand Name: Your brand or ours if you prefer

Packaging Options: Bulk, bottles, blister packs or customers’ requirement 1 kg/bags

Shipment ways: DHL, FedEx, UPS, EMS, TNT, by Sea, by air

Delivery Time: Delivery within two to seven days

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