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L-Lysine

An essential amino acid

Supports protein synthesis^{^†}

One of the nine essential amino acids, L-lysine plays a key role in the makeup of body proteins.^{^†}

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Understanding L-Lysine

Learn more about this essential amino acid.

What is L-lysine?

L-Lysine is a building block for protein. It’s an essential amino acid that plays a key role in the creation of body proteins.†

Who should take L-lysine?

Anyone looking to support the process of creating protein molecules may want to supplement their L-Lysine intake.†

Where is L-Lysine found?

L-Lysine is naturally found in animal-based foods, such as meat and dairy, but it can also be found in smaller amounts in plant-based foods, like legumes. Since the body can’t produce its own L-Lysine, it relies on food and supplement sources.

Products to support your health

L-Lysine

L-Lysine 1000 mg Tablets

L-Lysine 1000 mg Tablets

$9.79

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L-Lysine FAQ VIEW ALL FAQ VIEW ALL FAQ on L-Lysine FAQ

Explore expert answers to some of the most frequently asked l-lysine questions.

Does L-lysine have any side effects?

There are no documented side effects. However, consumption of doses greater than 3 g/day is not recommended because safety has not been established at these high doses.
How much L-lysine should I take?

Doses of 1–3 g of L-lysine daily are safe when divided among meals.
Is L-lysine a vitamin?

L-lysine is not a vitamin. It is an essential amino acid, which plays a key role in the makeup of body proteins.
When does this product expire?

Please refer to the expiration date on the bottle.