L-Theanine
60 Servings Per Container: $0.49/Serving
Supports relaxation, mental clarity, and stress response—helping you stay calm and focused without drowsiness
- Promotes calm, focused mental clarity
- Helps reduce acute stress without brain fog
- Supports relaxation and sleep quality
Calm, Focused Mental Performance.
L-Theanine is a naturally occurring amino acid that promotes relaxation without sedation—helping you stay clear, composed, and focused under stress or wind down for sleep.
Calm, Clarity, and Control.
L-Theanine helps reduce acute stress while supporting a calm, focused mental state—so you can stay composed without losing your edge. By promoting relaxation without drowsiness, it allows you to think clearly, manage pressure more effectively, and maintain steady focus throughout the day. Whether you're navigating a demanding schedule or winding down at night, L-Theanine supports a more balanced, controlled state of mind.
L-Theanine works by supporting the brain’s natural relaxation pathways without impairing alertness.
It increases alpha brain wave activity—associated with a calm, focused mental state—and helps regulate key neurotransmitters like GABA and serotonin, which influence mood, stress response, and mental clarity.
By reducing neuronal excitability, L-Theanine promotes a state of relaxed alertness, making it effective for both daytime focus and nighttime wind-down.
Flexible, Daily Support
Take 1 capsule (200mg) daily.
- For focus and stress: take anytime during the day
- For sleep: take 30–60 minutes before bed
Consistent daily use is recommended for best results.
L-Theanine 200mg per serving
Other Ingredients: Rice Flour, Hypromellose (Capsule), Magnesium Stearate, Silica
GMO Free, Gluten Free, Vegan.
When to Use
Daily, or as needed for stress, focus, or sleep support.
Onset Time
Some effects may be felt within hours, with more noticeable benefits after consistent use over several days.
Expected Results
- Increased relaxation without drowsiness
- Improved focus and mental clarity
- Easier transition to sleep and better sleep quality
There are 5 credible studies related to this product:
- Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial
- L-Theanine reduces psychological and physiological stress responses
- Effects of L-theanine on attention and reaction time response
- A Randomized, Triple-Blind, Placebo-Controlled, Crossover Study to Investigate the Efficacy of a Single Dose of AlphaWave®l-Theanine on Stress in a Healthy Adult Population
- In Search of a Safe Natural Sleep Aid
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 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.




