Ingredient

L-Threonine

L-Threonine is an essential amino acid needed for protein synthesis in the body.

All medicines
169
Combination
169
Prescription medication
154
OTC medication
15

MFDS ingredient code M103060

What does it do?

L-Threonine is an essential amino acid that the human body cannot produce by itself, therefore it must be obtained through external sources. It is primarily included in tonics used for nutritional supplementation and enhancing physical strength.

L-Threonine, as a fundamental unit that makes up proteins, helps in the growth and recovery of body tissues. It also plays an important role in maintaining nervous system and immune function.

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

Good to know

Unlike other amino acids, L-Threonine is not synthesized in the body and must be supplied through food or medication. This characteristic distinguishes it from other non-essential amino acids.

Medicines containing this ingredient

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

Category
Dosage form
Strength
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169 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

  • QI saw L-threonine on a supplement label; what does it do?

    L-threonine is an essential amino acid that cannot be synthesized in the body and serves as a basic building block of proteins. It aids in the growth and recovery of body tissues and plays a role in maintaining nerve and immune function, thus being included in energizers.

    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.