Image for banner 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.

Understanding L-Lysine

Learn more about this essential amino acid.

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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.†

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Who should take L-lysine?

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

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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.

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