Ingredient

L-Methionine

L-Methionine is an essential amino acid necessary for protein synthesis in the body.

All medicines
168
Combination
168
Prescription medication
153
OTC medication
15

MFDS ingredient code M218567

What does it do?

L-Methionine is an essential amino acid that cannot be synthesized by the human body and must be obtained through diet. It is commonly found in nutritional supplements and tonics used for enhancing physical strength. It also helps improve liver function and detoxification.

L-Methionine serves as a fundamental building block for protein production in the body. It also contributes to the synthesis of substances necessary for detoxification in the liver, including sulfur. As a result, it aids in maintaining liver health and recovering from fatigue.

Approved uses differ by product. Check each product's information for its actual use.

Good to know

L-Methionine, unlike other amino acids, contains sulfur, which gives it a unique role. It differentiates itself as a tonic specialized for improving liver function compared to other general amino acid supplements. Additionally, it is involved in several important biochemical reactions in the body.

Medicines containing this ingredient

Even with the same ingredient, strength, dosage form and how it is taken can differ.

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168 total

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Even with the same ingredient, dosage and approved uses can differ by strength, dosage form and combined ingredients. Check each product's information before taking it.

Combined ingredients

Ingredients used together with this ingredient in combination products.

Questions about this ingredient

  • QCan the body not produce L-methionine?

    Yes, L-methionine is an essential amino acid that cannot be synthesized in the human body and must be supplemented through intake. It is included in energizers primarily for nutritional support and enhancing physical strength. Please consult with a pharmacist regarding whether additional supplementation is needed.

    Answers 1 · 2026.09.14

  • QIs it true that methionine is good for the liver?

    The ingredient description states that L-methionine contains sulfur and contributes to the synthesis of substances necessary for detoxification in the liver, thus helping to maintain liver health and recover from fatigue. If you are undergoing treatment for liver disease, please consult your attending physician before taking it.

    Answers 1 · 2026.09.14

For anything that needs medical judgment, consult a doctor or pharmacist.

SourceKorea Ministry of Food and Drug Safety (Drug Safety Korea)

This drug information is based on data provided by the Korea Ministry of Food and Drug Safety.
Consult a doctor or pharmacist for accurate dosage, administration, and usage instructions.