Life Extension L-Theanine amino acid for calm, relaxation, and mood, 100 mg, 60 vegetarian capsules
Life Extension L-Theanine, amino acid theanine, calm, relaxation, mood, gluten-free, non-GMO, vegetarian, 100 mg, 60 capsules
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Life Extension L-Theanine, amino acid theanine, calm, relaxation, mood, gluten-free, non-GMO, vegetarian, 100 mg, 60 capsules

|143 ratings

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.
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4.684527393136665 stars out of 5, based on 1663 seller reviews(4.7)
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4.7 out of 5 stars
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143 ratings118 reviews
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  3. 3 stars4% (6)
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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
Mar 14, 2026
Janice
5 out of 5 stars review

Seller Verified Purchase

So far, great!

So far, great!

Review from Life Extension
Helpful?4F1C3G37RU3A31223350