L-Theanine is an amino acid derived from the tea plant that promotes stress relief and relaxation. InVite Health’s L-Theanine is non-habit forming and starts to work very rapidly. Soon after taking L-Theanine, a restful state takes effect that does not reduce alertness or cognitive ability. It may also offset the effects of the stress hormone Cortisol on the brain and nerves. This may help decrease cravings for comfort food, making it highly beneficial for individuals starting or maintaining a diet. L-Theanine may also help improve your quality of sleep when taken at night.†
Exclusive InVite® Health Features of L-Theanine
- Non-GMO Dietary Supplement
- Made following cGMP (current Good Manufacturing Practices)
- Scientifically formulated by InVite® degreed healthcare professionals, using the latest clinical studies and scientific research
- Vcaps® Vegetarian Capsule® Technology from Lonza, employing advanced delivery for efficient absorption
Suggested Usage: As a dietary supplement for adults, take one (1) capsule two to four times a day as needed or as directed by a healthcare professional.
|Serving Size: 1 Vegetarian Vcaps® Capsule
|Servings Per Container: 60
|Amount Per Serving
|*Daily Value (DV) not established.
Other Ingredients: Rice Flour, Hypromellose (Vegetable Capsule), Vegetable Stearate.
Vcaps® & logo are trademarks of Lonza or its affiliates.
As a dietary supplement for adults, take one (1) Vcaps® capsule two (2) to four (4) times a day as needed, or as directed by a healthcare professional.
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The Science Behind L-Theanine
Research published in Nutrients states that in humans, L-theanine has been reported to provide beneficial effects on mental state, including sleep quality and attentiveness. 
A study published in Asian Pacific Journal of Nutrition found that L-Theanine significantly increases activity in the alpha frequency band which indicates that it relaxes the mind without inducing drowsiness. 
A review published in the Journal of the American College of Nutrition suggests that L-theanine is a safe, natural sleep aid. L-Theanine promotes relaxation without drowsiness. Unlike conventional sleep inducers, L-theanine is not a sedative but promotes a good quality of sleep according to the research. 
Research from Biological Psychology suggests that supplementing with L-Theanine helps to reduce cortisol levels and helps to support a positive mood while helping to offset the cravings for high-sugar, high-fat, salty foods thereby helping people starting a calories-deficit diet for weight loss. 
 Nutrients. 2019 Oct; 11(10): 2362.
 Asia Pac J Clin Nutr. 2008;17 Suppl 1:167-8.
 J Am Coll Nutr. 2015;34(5):436-47.
 Biol Psychol. 2007 Jan;74(1):39-45.
I have been using L-Theanine and it already has made a difference in my life. It clams me down and helps me with stress. As a matter of fact, I have been using it for three months only.