• A beige cylindrical container labelled "L-Thea nine, 60 x 400 mg capsules" by Augment Life sits on a softly lit Gray background, exuding a calm, minimalist vibe.
  • A beige cylindrical container labelled "L-Thea nine, 60 x 400 mg capsules" by Augment Life sits on a softly lit Gray background, exuding a calm, minimalist vibe.
  • A beige cylindrical container labelled "L-Thea nine, 60 x 400 mg capsules" by Augment Life sits on a softly lit Gray background, exuding a calm, minimalist vibe.
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L-Theanine - 400 mg capsules

L-Theanine - 400 mg capsules

€29,00
€29,00
Sale Sold out
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100% Refunds on All Returns for Any Reason.

Gluten Free
Vegan
Sustainable
Proven Results
3rd Party Tested
ISO 9001 and GMP Practices
About L-Theanine

L-theanine is a naturally occurring amino acid that can be found in the green tea plant (Camelia sinensis). L-theanine acts as a neuroprotector that can cross the blood-brain barrier and have a direct effect on the brain. It is most known for its relaxing and calming effects, especially in highly stressful situations. For example, four studies using 400 mg of L-theanine found that it significantly reduced stress and anxiety in healthy participants. 250-400 mg of L-theanine also improved focus, sleep, and blood pressure in healthy young adults. L-theanine is recognized as a safe supplement with little to no side effects. It may interact with medication for controlling blood pressure and treating cancer, and it is not suitable for pregnant and breastfeeding women. The usual daily dosage of L-theanine is 200-400 mg, with one tablet usually containing 200 mg.

Benefits of L-Theanine
  • L-Theanine works as a natural calming agent, especially in very stressful situations,
  • L-Theanine reduces anxiety and helps you think clearly,
  • L-Theanine improves focus, sleep, and blood pressure in healthy young adults.
Efficacy Studies
  1. Hidese et al. proved that taking 200 mg of L-theanine for 4 weeks significantly reduced stress and anxiety symptoms and improved cognitive function and verbal fluency. 
  2. Giesbrecht et al. showed that a combination of 97 mg of L-theanine and 40 mg of caffeine reduced tiredness and improved alertness after 20 and 70 min of taking the supplements.  
  3. In a 2012. clinical study, Yoto et al. showed that taking 200 mg of L-theanine for a week significantly reduced blood pressure and stress. 
Sustainability
  • Augment Life cares about sustainability. All supply, packaging, and operational decisions have been made to reduce waste, CO2 footprint, and ensure we take care of our planet.
  • This product has a CO2 footprint of 386 grams.
  • This is 100% biodegradable, paper tube, packaging. Made from sustainable and responsible sources. Keep the tube for storing paperclips, or make a craft project with them. If they end up in a river, or the sea, or a landfill they will disintegrate in a few months and become part of the soil and nature. Unlike plastic which will be in our waters and landfills for thousands of years.
Quality Control
  • Stored according to GMP best practices, in a facility with low humidity, <25C, refrigeration as required.
  • A certified food and chemical analysis lab (BAV Institut) has tested every shipment we received to confirm the purity and quality is as claimed. Please note the lab statement of analysis in our product images slider.
  • Our supplements are produced and certified according to the highest standards in the food supplement industry. With ISO 9001 and ISO 2200 the world leading standards for process management, and precision are maintained to insure you receive the highest quality, purest materials possible.
  • HALAL and Kosher.
Shipping and Returns
  • Shipping: All orders are shipped with priority, tracking, and insurance. Shipping time can be as fast as 3-4 days depending on your location and the shipping service you choose. Please check our shipping policy page to see how long a shipment to your country will take.

  • Returns: If you change your mind or are unsatisfied with your order, let us know, and we'll send you a return label and refund your payment once the return arrives at our shipping facility. Returns take 1 to 2 weeks at most to process.

  • Damaged Products: If you believe your supplement has been damaged we offer a free return in the first 14 calendar days from your original order placement date.

  • Wrong Item: If you ordered the wrong item, let us know as soon as possible. To order the correct item, please place a new order. To get a refund for your original order, once we have been notified we'll try to cancel your shipment and send out a new one as soon as possible. If the first product ordered is already en-route, you'll need to send it back as soon as it arrives. Once it has reached our restocking facility we'll be happy to refund your payment to the original payment method used.

  • Not What You Hoped For: If none of the other issues above applies to your return reason, please explain as best as possible and we'll do our best to find a solution.

  • Return Shipping Labels: Once your return is reported we'll send you a return shipping label. Depending on the reason for your return and the original order we may cover the cost of the return.
Product Specifications
  • Capsules: 60 & 180
  • Capsule material: HPMC (vegetable glucose)
  • Contents:  L-Theanine
  • Capsule sizes: 400 mg
  • Container: FSC-certified, responsibly-sourced paper tube
  • Container dimensions:
    60 capsules: 5 cm (diameter), 10 cm (height) 
    180 capsules: 7 cm (diameter), 13 cm (height)
  • Labels: Coated paper (faster biodegrading)
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Understand L-Theanine

  • How to take L-theanine?

    How to take L-theanine?

    L-theanine is a natural amino acid, found in green tea plants (lat. Camelia sinensis). It works as an antioxidant and neuroprotectant, that helps you to relax, sleep better, and be more focused and concentrated.  But how...

    How to take L-theanine?

    L-theanine is a natural amino acid, found in green tea plants (lat. Camelia sinensis). It works as an antioxidant and neuroprotectant, that helps you to relax, sleep better, and be more focused and concentrated.  But how...

  • Why should you take L-theanine?

    Why should you take L-theanine?

    L-theanine is a special amino acid that you can find in tea leaves (of the Camellia sinensis plant). Scientific studies have shown that supplementation with L-theanine helps you sleep better, be less anxious, relax,...

    Why should you take L-theanine?

    L-theanine is a special amino acid that you can find in tea leaves (of the Camellia sinensis plant). Scientific studies have shown that supplementation with L-theanine helps you sleep better, be less anxious, relax,...

  • How Much L-Theanine Should You Take?

    How Much L-Theanine Should You Take?

    L-theanine, a naturally-occurring amino acid, has been known to be a star in the world of wellness that’s primarily found in green tea and some mushrooms. It is known as...

    How Much L-Theanine Should You Take?

    L-theanine, a naturally-occurring amino acid, has been known to be a star in the world of wellness that’s primarily found in green tea and some mushrooms. It is known as...