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  • Life Extension - L-Theanine Life Extension - L-Theanine
  • Life Extension - L-Theanine (Supplement Facts) Life Extension - L-Theanine (Supplement Facts)
  • Life Extension - L-Theanine (Label) Life Extension - L-Theanine (Label)

Life Extension - L-Theanine

Quick Overview

Life Extension - L-Theanine is a 100% theanine non-essential amino acid supplement that comes in easy-to-swallow vegetarian capsules (60 vegetarian capsules). Anyone who is looking to increase their daily intake of theanine can benefit from using L-Theanine by Life Extension.

  • 100% theanine supplement
  • Non-essential amino acid
  • Contains vitamin C
  • Easy-to-swallow vegetarian capsules

Availability: In stock Hurry Up! 1 in stock



L-Theanine by Life Extension

L-Theanine is a non-essential amino acid that occurs naturally in a variety of foods and drinks, including green tea. Because it's only found in very small quantities in foods, getting it from your diet alone can quickly become very expensive and time-consuming, making the L-Theanine by Life Extension is a great choice to go with if you want to make sure you stay topped up.

Benefits of L-Theanine by Life Extension

  • Occurs naturally in protein
  • 100 mg of L-Theanine per serving
  • Non-essential amino acid
  • Easy-to-swallow vegetarian capsules

This product also contains Vitamin C, which contributes to:

  • Reducing fatigue and tiredness
  • Maintaining a normal function of the immune system
  • Protecting the cells from oxidative stress
  • Maintaining a normal energy-yielding metabolism
  • Increasing the uptake of iron

Who is L-Theanine suitable for?

As mentioned, L-Theanine occurs naturally in foods, but only in small amounts. Even though you might consume some Theanine as part of your daily diet, it can be difficult, expensive and time-consuming to get enough of it from your diet alone. This makes L-Theanine by Life Extension a great and very cost-effective way of making sure you get your Theanine in on a daily basis.

Click here to see rest of our Life Extension product range, and click here to visit the Life Extension homepage. 

Additional Information

Product InformationSuntheanine® is a registered trademark of Taiyo International, Inc. Use of Suntheanine® is protected by U.S. Trademark Reg. No. 2548957.
Container Size (Grams/ml/caps)60
Servings Per Container60
Serving Size (Gram/ml/caps)1
Part Number (Manufacturer)N/A

Keep out of reach of children.

Do not exceed recommended daily 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.

A food supplement should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.

Store tightly closed in a cool, dry place.


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


Vitamin C (as ascorbyl palmitate), Suntheanine® (L-Theanine), microcrystalline cellulose, vegetable cellulose (capsule).

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