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L-Lysine is an amino acid essential in human physiology. Lysine is vital for normal growth and for the manufacture of collagen, a substance import...

Lysine is an essential amino acid necessary for protein synthesis and to help maintain nitrogen balance in the body*. It provides nutritional supp...

Montiff’s L-Lysine aids in immune support.

Contains 375 mg of l-Methionine (free-form) per serving.

L-Methionine 500 mg capsule L-Methionine supplies 500 mg of this essential amino acid.

Powerful methylation, MTHFR, and homocysteine support Supports healthy cognition and mood Healthy genetic expression support

L-Serine 500 mg capsule L-Serine supplies 500 mg of the amino acid in each capsule.

Promotes relaxation and helps to moderate occasional stress Promotes relaxation‡ Helps moderate occasional stress‡ Made with hypoallergenic, veg...

L-Theanine is a naturally occurring, unique amino acid found in green tea leaves. L-theanine has been found to reduce stress by promoting relaxati...

A dietary supplement that helps promote a restful state.* L-Theanine has shown the ability to promote deep muscle relaxation and improved quality o...

Naturally occurring amino acid supports stress management, relaxation and improved sleep quality.* Convenient, fast-acting liquid formula helps en...

HELPS PROMOTE A RESTFUL, RELAXED STATE* L-Theanine is an amino acid that helps promote a restful, relaxed state without diminishing daytime alertn...

L-Theanine is a unique amino acid present almost exclusively in the tea plant (Camellia sinensis).* Theanine helps maintain a sense of well-being ...

Promotes relaxation and neurological health‡ L-Theanine supplies 100 mg of pure L-theanine in each vegetarian capsule. L-Theanine is an ...

L-theanine, a unique amino acid compound found in green tea, is noted for its calming benefits.* Suntheanine®brand pure L-theanine is produced...

L-Theanine is an amino acid shown to be the constituent responsible for the calming properties of green tea.* L-Theanine can cross the blood-brain...

L-theanine is a natural bioactive found in high amounts in certain species of tea such as Camellia sinensis, which have been known for their health...

Enhances serotonin synthesis to support emotional well-being and restful sleep‡ Supports emotional well-being and restful sleep‡ Promotes healthy...

L-Tryptophan is an essential amino acid; therefore, it is not synthesized by the body and must be obtained from the diet. In the brain, Tryptophan...

L-tryptophan is an essential amino acid; therefore, it is not synthesized by the body and must be obtained from the diet. In the brain, tryptophan...

Enhances serotonin synthesis to support emotional well-being and restful sleep Supports emotional well-being and restful sleep‡ Promotes healthy ...

Essential amino acid This essential alpha-amino acid helps make proteins and brain-signaling chemicals like the neurotransmitters serotonin and mel...