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Ingredient

L-Theanine

Promising

An amino acid from green tea associated with a relaxed, alert subjective state.

How it works

Modulates GABA, glutamate, and dopamine signalling and increases alpha-band EEG activity at modest doses.

Evidence

A small EEG study reports increased alpha-band activity at 50 mg, consistent with a relaxed-alertness state.

Studies

Nobre et al., Asia Pac J Clin Nutr, 2008
50 mg L-theanine increased alpha-band EEG activity associated with relaxed alertness.
PubMed 18296328 ↗

Top products

Sorted by effective monthly cost

Now Foods L Theanine 200 mg

Now Foods

Per serving: 200 mg
Studied midpointStudied range midpoint is used. Pricing assumes label-recommended servings.See methodology: 50 mg · 1/day

Buy at Amazon.ca

Thorne L Theanine 200 mg

Thorne

Per serving: 200 mg
Studied midpointStudied range midpoint is used. Pricing assumes label-recommended servings.See methodology: 50 mg · 1/day

Buy at Amazon.ca

Momentous L Theanine 100 mg

Momentous

Per serving: 100 mg
Studied midpointStudied range midpoint is used. Pricing assumes label-recommended servings.See methodology: 50 mg · 1/day

Buy at Amazon.ca

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