Hero image 0 of Life Extension L-Theanine, amino acid theanine, calm, relaxation, mood, gluten-free, non-GMO, vegetarian, 100 mg, 60 capsules, 0 of 11
Life Extension L-Theanine, amino acid theanine, calm, relaxation, mood, gluten-free, non-GMO, vegetarian, 100 mg, 60 capsules
Key item features
- Promotes relaxation – If you’ve felt the calming effects of green tea, thank theanine! Found in green tea, it’s one of the best-known amino acids for stress— and for good reason. This supplement supports a healthy stress response to maintain your zen.
- Calming brainwave patterns – L-theanine helps modulate several different aspects of brain activity for mood support. This supplement promotes specific brainwave patterns similar to those associated with performing meditation or getting a massage.
- Neurotransmitter production – The neurotransmitter gamma amino butyric acid (GABA) plays a role in influencing healthy levels of the feel-good neurotransmitters dopamine and serotonin. L-theanine helps encourage GABA production, to keep that feel-good feeling going.
- Ingredients matter – We use only pure, high-quality ingredients. The majority of our products are non-GMO and gluten-free—and a Certificate of Analysis is available for every one.
- Live your healthiest life - For over 40 years, we’ve been developing advanced, effective formulas made with the highest standards and based on the latest scientific findings. We believe the answers to a healthier, richer life are within reach, and that rigorous scientific research is the path to get us there. That’s why so many of our nutritional formulas are designed using specific ingredients and amounts based on scientific studies.
Specs
- BrandLife Extension
- Size60 Count (Pack of 1)
- Enteral medication formCapsules
- Primary ingredientTheanine
- FlavorUnflavored
- Count per pack60
Reviews summary
Pros
- : Helps users reach deeper sleep stages.
- : Provides a soothing sensation to reduce stress.
- : Helps alleviate stress without side effects.
- : Made with high-end components and manufacturing standards.
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Current price is USD$18.00
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Columbus, 43215
Arrives by Wed, Apr 29
Sold by Life Extension Buyers Club Inc|Pro Seller
Fulfilled by Walmart
4.66857551896922 stars out of 5, based on 1399 seller reviews(4.7)1399 seller reviews
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About this item
Product details
L-theanine, an amino acid found in green tea, has a reputation for its calming and relaxing effects. This theanine supplement supports mood and fights stress in a few different ways. It promotes relaxation by supporting a healthy stress response, encourages brainwave patterns that are similar to the effects of meditation, and encourages the production of GABA, a neurotransmitter that influences levels of the feel-good neurotransmitters dopamine and serotonin. The theanine used in this L-theanine supplement contains the pure form of this amino acid, delivering 100 mg of L-theanine and is non-GMO, gluten-free and vegetarian.
- Promotes relaxation – If you’ve felt the calming effects of green tea, thank theanine! Found in green tea, it’s one of the best-known amino acids for stress— and for good reason. This supplement supports a healthy stress response to maintain your zen.
- Calming brainwave patterns – L-theanine helps modulate several different aspects of brain activity for mood support. This supplement promotes specific brainwave patterns similar to those associated with performing meditation or getting a massage.
- Neurotransmitter production – The neurotransmitter gamma amino butyric acid (GABA) plays a role in influencing healthy levels of the feel-good neurotransmitters dopamine and serotonin. L-theanine helps encourage GABA production, to keep that feel-good feeling going.
- Ingredients matter – We use only pure, high-quality ingredients. The majority of our products are non-GMO and gluten-free—and a Certificate of Analysis is available for every one.
- Live your healthiest life - For over 40 years, we’ve been developing advanced, effective formulas made with the highest standards and based on the latest scientific findings. We believe the answers to a healthier, richer life are within reach, and that rigorous scientific research is the path to get us there. That’s why so many of our nutritional formulas are designed using specific ingredients and amounts based on scientific studies.
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.
Specifications
Dietary Method
Vegetarian
Multipack Quantity
1
Count Per Pack
60
Brand
Life Extension
Indications
Health Concern
Mood Support
Directions
Dosage
Take one (1) capsule one to four times daily, or as recommended by a healthcare practitioner.
Instructions
Read the entire label and follow the directions carefully prior to use. Store tightly closed in a cool, dry place.
Warranty
Warranty information
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Ingredients
Inactive Ingredients
Other ingredients: microcrystalline cellulose, vegetable cellulose (capsule), silica, vegetable stearate.
Ingredients
AlphaWave® L-Theanine 200 mg Other ingredients: microcrystalline cellulose, vegetable cellulose (capsule), silica, vegetable stearate. Non-GMO AlphaWave® is a registered trademark of Ethical Naturals, Inc.
Active Ingredients
AlphaWave® L-Theanine, 100 mg. AlphaWave® is a registered trademark of Ethical Naturals, Inc.
Active Ingredient Name
AlphaWave® L-Theanine, 100 mg. AlphaWave® is a registered trademark of Ethical Naturals, Inc.
Warnings
Warning Text
KEEP OUT OF REACH OF CHILDREN, DO NOT EXCEED RECOMMENDED DOSE, Do not purchase if outer seal is broken or damaged. When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.
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Customer ratings & reviews
How item rating is calculated
Reviews summary
Pros
- : Helps users reach deeper sleep stages.
- : Provides a soothing sensation to reduce stress.
- : Helps alleviate stress without side effects.
- : Made with high-end components and manufacturing standards.
Generated by AI
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Showing 1-3 of 118 reviews
Feb 22, 2018
AnnieR
5 out of 5 stars review
Seller Verified Purchase
A lifesaver
I went thru a very intense family crisis that lasted for over a year. I don't know what I would have done without my theanine. I took 2 every night at bedtime and it really helped me to sleep. And on especially difficult days, I would take 1 or 2 throughout the day. No side effects at all, the only thing I noticed was I wasn't so stressed...
Review from lifeextension.com
Helpful?4F1C3G37RU3A31223350
Nov 21, 2019
GERTRUDE
5 out of 5 stars review
Seller Verified Purchase
In our 80's and using LEF advice
We take almost daily and at hs to keep calm during stressful times dealing with aging issues [This review was collected as part of a promotion.]
Review from lifeextension.com
Helpful?4F1C3G37RU3A31223350
Aug 20, 2025
SUSAN
5 out of 5 stars review
Seller Verified Purchase
Very helpful at night
This has become a regular supplementation of mine for the evening before going to bed. It helps me significantly.
Review from Life Extension
Helpful?4F1C3G37RU3A31223350
