L-Theanine
Servings Per Container: 60
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L-Theanine is a naturally occurring amino acid found in tea leaves that promotes calm, focused mental states without causing drowsiness. It works by increasing alpha brain wave activity and supporting neurotransmitters like GABA and serotonin—helping you stay relaxed yet alert.
Often used to reduce acute stress, improve focus, and support the transition into restful sleep, L-Theanine is a safe, non-sedating option for managing mental performance and emotional balance throughout the day.
Everything at a Glance
- Increases relaxation
- Promotes mental health
- Helps reduce acute stress
- Enhances the transition to sleep and depth of 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
Take 1 capsule 30-60 minutes prior to sleep
- L-Theanine 200mg
Other Ingredients: - Rice Flour, Hypromellose (Capsule), Magnesium Stearate, Silica
There are 5 credible studies related to this product:
2. L-Theanine reduces psychological and physiological stress responses
3. Effects of L-theanine on attention and reaction time response
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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

What to Expect with L-Theanine
L-Theanine Supplement Facts
Frequently Asked Questions
L-Theanine is an amino acid naturally found in green tea. As a dietary supplement, it is commonly used to support relaxation, stress management, and calm focus without causing significant drowsiness.
L-Theanine is used to support relaxation, stress management, and mental clarity. Many people take it to promote a balanced mental state without sedation.
Yes. L-Theanine is commonly taken daily when used as directed. Many individuals incorporate it into their routine to support ongoing stress management and focus.
L-Theanine is known for promoting relaxation without significant drowsiness at recommended serving sizes. Many people use it to support a calm, focused state while remaining mentally alert.
Individual responses may vary depending on dosage and timing.
Yes. L-Theanine is often combined with caffeine to support focused energy. While caffeine promotes alertness, L-Theanine may help promote a smoother, more balanced experience.
Yes, L-Theanine is often used to support sleep quality by promoting relaxation and reducing mental tension. It does not act as a sedative, but may help create a calmer state that supports easier sleep onset and more restful sleep.
L-Theanine is a dietary supplement that is generally well tolerated when used as directed, including for daily use. It is commonly used to support relaxation and calm without causing dependency.
As with any supplement, individual responses can vary.
Some individuals notice calming effects relatively quickly, while others experience more gradual benefits with consistent use. Individual responses may vary.
L-Theanine is commonly taken alongside other supplements, including caffeine, magnesium, and ingredients that support focus or sleep. Many people include it as part of a broader daily routine.
If you are taking medications or have specific health concerns, it is recommended to consult with a healthcare professional before use.
Yes. Momentous L-Theanine is NSF Certified for Sport®, meaning every batch is independently tested for purity, potency, and label accuracy.
NSF Certified for Sport® also confirms the product is tested for banned substances, making it suitable for drug-tested athletes.





