

L-Theanine
L-Theanine is a naturally occurring, non-protein amino acid found in tea that easily crosses the blood-brain barrier and can support the activation of alpha waves. L-Theanine increases levels of neurotransmitters like gamma-aminobutyric acid (GABA) and serotonin that regulate mood and relaxation. By modulating these neurotransmitters, it reduces neuronal excitability, promoting a calm and focused state. It also stimulates alpha brainwaves associated with a relaxed and focused mentality.
Serving Per Container 60
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Everything at a Glance
- Increases relaxation
- Promotes mental health
- Helps reduce acute stress and anxiety
- Enhances the transition to sleep and depth of sleep
Take 1 capsule 30-60 minutes prior to sleep
- Helps increase the levels of neurotransmitters like gamma-aminobutyric acid (GABA) and serotonin, which play crucial roles in regulating mood and relaxation
- Helps to reduce neuronal excitability, promoting a calm and focused state
- Enhances focus without jitters by triggering alpha brain waves
L-Theanine
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L-Theanine is an amino acid that is not common in the diet and mainly found in green tea. L-Theanine promotes relaxation while maintaining alertness along with supporting healthy cognitive function.
Momentous L-Theanine capsule
Green Tea
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Clinical Research
The research on L-theanine is emerging, with multiple studies confirming its benefits for relaxation, focus, and cognitive performance. The efficacy and safety of L-theanine makes it a trusted choice among experts in human performance and cognitive health.
- Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial
- L-theanine, a natural constituent in tea, and its effect on mental state
- Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial
- The acute effects of L-theanine in comparison with alprazolam on anticipatory anxiety in humans
From Dr. Andrew Huberman, host of the Huberman Lab podcast
"100 to 400 milligrams of L-theanine taken alone or in combination with the other supplements mentioned in the stack allows many people to fall asleep, sleep really deeply, and feel much more refreshed the next day."
What to Expect with L-Theanine
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Onset Time
Expected Results
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Frequently Asked Questions
Yes, L-Theanine is generally considered safe and is well tolerated. It does not cause drowsiness or dependency.
No, L-Theanine promotes relaxation without causing drowsiness, allowing you to maintain mental alertness.
L-Theanine is typically safe to take with other supplements and medications, but it's always best to consult with your healthcare professional for personalized advice.
Yes, L-Theanine promotes relaxation and can support better sleep quality. It is often used as a natural sleep aid.