L-Theanine - Life Extension

Promotes a calming and mood-enhancing effect

L-Theanine, 100 mg 60 vegetarian capsulesis a supplement/vitamin for you if you are interested in Amino Acids, Mood & Stress Management, Supplements

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Theanine is an amino acid found in tea that has calming effects on your brain, by increasing levels of serotonin and dopamine and blocking the binding of L-glutamic acid to glutamate receptors. Life Extension members can enjoy the benefits of this unique ingredient offered in a 100 mg supplement. This product causes no adverse reactions. The Japanese people add theanine to soft drinks and chewing gum to induce relaxation.

The calming mood-enhancing effect is achieved by promoting electrical brain activity commonly present when you are very relaxed, which literally sets you in a better mood.

Nowadays, the effect that theanine has on the brain is compared with meditation, massage and aromatherapy. What you can expect is relaxation and a sense of wellbeing. L-Theanine is a non-toxic, highly desirable mood regulator.

Beware of Imitations: There are different forms of L-theanine. Suntheanine is the only pure form that is protected by internationally recognised patents and proven in clinical studies to be safe to use. Independent laboratory analysis have identified products on the market that claim to contain L-theanine. In reality, they are half L-theanine or D-theanine, forms that have not been empirically studied.

Supplement Facts

Amount per Serving

Suntheanine® (L-Theanine)

100 mg

Other ingredients: microcrystalline cellulose, vegetable cellulose (capsule), ascorbyl palmitate.

Suntheanine® is a registered trademark of Taiyo International, Inc. Use of Suntheanine® is protected by U.S. Trademark Reg. No. 2548957.

Dosage and Use

  • Suggested daily intake is one (1) capsule, one to four times, with or without food, or as recommended by a medical practitioner.


  • Keep out of reach of children.
  • Do not exceed recommended dose.
  • Do not purchase if outer seal is broken or damaged.
  • If you are undergoing treatment for a medical condition or if you are pregnant or lactating, please consult your medical practitioner first.