---
product_id: 728254167
title: "L-Theanine, 100 mg 60 Vegetarian Capsules"
brand: "life extension"
price: "365 kr"
currency: DKK
in_stock: false
reviews_count: 5
category: "Life Extension"
url: https://www.desertcart.dk/products/728254167-l-theanine-100-mg-60-vegetarian-capsules
store_origin: DK
region: Denmark
---

# Fast-acting brain calm & focus boost 100% vegetarian, non-GMO capsules 100mg pure L-Theanine per capsule L-Theanine, 100 mg 60 Vegetarian Capsules

**Brand:** life extension
**Price:** 365 kr
**Availability:** ❌ Out of Stock

## Summary

> 🧘‍♂️ Elevate your calm, sharpen your edge — the smart millennial’s secret weapon!

## Quick Answers

- **What is this?** L-Theanine, 100 mg 60 Vegetarian Capsules by life extension
- **How much does it cost?** 365 kr with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/728254167-l-theanine-100-mg-60-vegetarian-capsules)

## Best For

- life extension enthusiasts

## Why This Product

- Trusted life extension brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rapid Relaxation:** Formulated by Life Extension to cross the blood-brain barrier quickly for fast results
- • **Pure & Clean Formula:** 100 mg L-Theanine in vegetarian capsules, free from GMOs and artificial fillers
- • **Trusted Quality & Safety:** Manufactured in the USA with strict seal integrity and physician consultation recommended
- • **Stress Defense for Busy Pros:** Ideal for high-pressure lifestyles needing calm clarity without the jitters
- • **Calm Your Mind, Clear Your Focus:** Boost serotonin & dopamine naturally for balanced mood without drowsiness

## Overview

L-Theanine 100 mg vegetarian capsules by Life Extension deliver a pure, fast-acting amino acid derived from green tea that promotes relaxation and mental clarity by enhancing serotonin and dopamine levels. Designed for professionals seeking calm focus without sedation, this non-GMO, vegetarian supplement supports stress management with no side effects or dependency risks.

## Description

Product Description Theanine is the main amino acid of tea that provides a calming effect on the brain by boosting the levels of serotonin and dopamine and blocks the connection of L-glutamic acid to the glutamate receptor. Life Extension customers enjoy the benefits of this unique ingredient with 100mg supplement. These "Comfortable" supplements do not produce any side effects. In fact, teanin is added to soft drinks and chewing gum for relaxation. The effect of calming mood is accomplished by increasing the electronic brain activity commonly seen during the very relaxing process, and literally improving your mood. Ingredients AlphaWave L-Theanine 200mg Other Ingredients: Microcrystalline cellulose, vegetable cellulose (capsule), silica, vegetable stearate Non-GMO AlphaWave is a registered trademark of Ethical Naturals Inc P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Directions Take 1 capsule once to four times a day, or as recommended by your healthcare professional Safety Warning Keep out of reach of children. Do not exceed recommended dosage. Do not purchase if the outer seal is damaged or damaged. Consult your physician if using a dietary supplement, if you are receiving medical conditions, pregnant or nursing. Call us at 1-866-280-2852 for reporting serious hazards or product information See more

Review: Very good
Review: First, a brief word about supplements. Many of us are turning to supplements of various kinds in order to avoid getting caught up or further entangled in the health care system. It's difficult to know how to evaluate a vast array of products that range from tried and true remedies that have been in use for many years and are known to be safe, to cutting edge experimental items that most of us have never heard of. I'd like to offer a few suggestions based on my own use of supplements. First, get your information from legitimate sites that evaluate real research. The makers of this particular product, L-Theanine, have an extensive site full of articles written for the layperson, along with citations for the laboratory research on which the articles are based. Look up the condition you're intending to treat and make a list of the possible treatments; you'll find many possibilities. Take desertcart reviews with a grain of salt; no two people will respond the same way to almost anything. Someone else's "useless snake oil" might be your miracle cure. Make your choice of supplements based on the most informed opinions you can find. Start with the most common and the cheapest. Basics like fish oil, vitamin C, garlic, are outstanding treatments for a variety of conditions and they are inexpensive and easy to obtain. No matter what condition you're treating, there will be a place to start with a supplement that is cheap, safe, and available Check on the recommended dosage of your chosen supplement. Make sure you're taking enough to make a difference - not always the amount suggested on the bottle. Again, read up at a reputable site. After you've determined your dosage, stick with it long enough to see results or to be sure you will not have any. Some natural treatments take longer to manifest a result than pharmaceutical drugs, so you may want to give as long as three months for some supplements. Keep in mind that even the most effective remedies (aspirin, for instance) don't work for everyone and aren't effective every time even for those who are typically helped by them. We simply don't know why this is. For instance, ibuprofen (a common and highly effective analgesic) doesn't help me a bit. Your body chemistry is unique to you. Now, on to the supplement in question. L-theanine is synthesized from green tea, a natural product. It is said to have a calming effect, while at the same time promoting clear thought. This combination is unusual. We're all aware that a cup of strongly caffeinated coffee does help to clear the mind, but certainly does nothing to promote a calm and peaceful attitude. Likewise, a cup of warm milk or chamomile tea may bring a degree of calm but along with it comes unwanted sleepiness and fuzzy thinking. I cannot say L-theanine will work for you, but two people close to me have found it invaluable in dealing with extraordinary stress. There is no zombie-like effect, no sleepiness, no jitteriness - just a moderately calming quality and a feeling of the mind clearing in the same way that your mind clears as you pass from sleep to a wide-awake state. There are no side effects and no problems of dependency. Unlike some supplements that work over a long period of time, you will know right away if L-theanine is going to be helpful for you. The Life Extension Foundation, which makes this supplement, has been at the forefront of finding ways to make products more effectively cross the blood/brain barrier, making them more available for your body to use, and this is among the products they make that take effect very quickly. It has recently been discovered that there may be other benefits to L-theanine besides those affecting mood, including the possibility that stroke victims may suffer less damage if given L-theanine within the first 24 hours after stroke has occurred. For those who are dealing with great stress, especially the kind caused by overwork, L-theanine should be on your list of possibilities.

## Features

- From The Life Extension Foundation in the USA
- The color and design of the actual product may differ from the images shown
- If you have any disease, please follow the instructions of your physician / 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.
- Do not use over capacity / DO NOT EXCEED RCOMMENDED DOSE.
- DO NOT USE IF OUTER SEAL IS BROKEN OR DAMAGED.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B00BSH7LXS |
| Amazon Bestseller | #234,871 in Health & Personal Care ( See Top 100 in Health & Personal Care ) #507 in Herbal & Nutritional Sleep Supplements |
| Customer Reviews | 4.6 4.6 out of 5 stars (774) |
| Date First Available  | October 24, 2013 |
| Department  | All Ages, Uni |
| Is Discontinued By Manufacturer  | No |
| Item model number  | 01683 |
| Manufacturer  | Life Extension |
| Product Dimensions  | 5.54 x 5.54 x 9.3 cm; 45.36 g |

## Product Details

- **Brand:** Life Extension
- **Flavor:** Unflavored
- **Primary Supplement Type:** L-Theanine
- **Unit Count:** 60 Count
- **Item Form:** Capsule
- **Item Weight:** 1.6 ounces
- **Item dimensions L x W x H:** 2.18 x 2.18 x 3.66 inches
- **Special Ingredients:** L-Theanine
- **Diet Type:** Vegetarian
- **Product Benefits:** Encourages brainwave patterns similar to those associated with meditation & massage, Involved in production of gamma amino butyric acid, the neurotransmitter that influences levels of dopamine and serotonin, Promotes relaxation by helping to support a healthy stress response

## Images

![L-Theanine, 100 mg 60 Vegetarian Capsules - Image 1](https://m.media-amazon.com/images/I/41QgXr5Jz8L.jpg)
![L-Theanine, 100 mg 60 Vegetarian Capsules - Image 2](https://m.media-amazon.com/images/I/41bL7DLmdKL.jpg)
![L-Theanine, 100 mg 60 Vegetarian Capsules - Image 3](https://m.media-amazon.com/images/I/41zwzH3r8iL.jpg)
![L-Theanine, 100 mg 60 Vegetarian Capsules - Image 4](https://m.media-amazon.com/images/I/5183BdM6XLL.jpg)
![L-Theanine, 100 mg 60 Vegetarian Capsules - Image 5](https://m.media-amazon.com/images/I/51B9rKzS5iL.jpg)

## Questions & Answers

**Q: What does taking L-theanine do?**
A: L-theanine is a mood support supplement that supports stress relief, alongside a calm and relaxed state of mind. It does this by influencing brainwave patterns in ways similar to calming activities like meditation and massage.

**Q: Is it okay to take L-theanine daily?**
A: Not only can you take L-theanine daily, you can take it multiple times a day as needed. This stress relief amino acid can be taken two capsules one to two times a day. Remember to always follow the instructions on any supplement.

**Q: When should you take L-theanine?**
A: You can take L-theanine daily or as needed to support your mood. If you’re not sure if you should start taking L-theanine or whether this amino acid is right for you, discuss it with your primary care provider.

**Q: Does L-theanine help support brain health?**
A: L-theanine influences calming brainwave patterns that support mood health. It also plays a role in the production of feel-good neurotransmitters dopamine and serotonin. So in a sense, yes—L-theanine is good for your brain.

**Q: Will L-theanine give me energy?**
A: This supplement is not intended to support energy production in the body. In fact, L-theanine has the opposite effect! This supplement was formulated specifically to help maintain a relaxed state of mind.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by B***A on October 14, 2025*

Very good

### ⭐⭐⭐⭐⭐ Review
*by S***H on October 17, 2013*

First, a brief word about supplements. Many of us are turning to supplements of various kinds in order to avoid getting caught up or further entangled in the health care system. It's difficult to know how to evaluate a vast array of products that range from tried and true remedies that have been in use for many years and are known to be safe, to cutting edge experimental items that most of us have never heard of. I'd like to offer a few suggestions based on my own use of supplements. First, get your information from legitimate sites that evaluate real research. The makers of this particular product, L-Theanine, have an extensive site full of articles written for the layperson, along with citations for the laboratory research on which the articles are based. Look up the condition you're intending to treat and make a list of the possible treatments; you'll find many possibilities. Take Amazon reviews with a grain of salt; no two people will respond the same way to almost anything. Someone else's "useless snake oil" might be your miracle cure. Make your choice of supplements based on the most informed opinions you can find. Start with the most common and the cheapest. Basics like fish oil, vitamin C, garlic, are outstanding treatments for a variety of conditions and they are inexpensive and easy to obtain. No matter what condition you're treating, there will be a place to start with a supplement that is cheap, safe, and available Check on the recommended dosage of your chosen supplement. Make sure you're taking enough to make a difference - not always the amount suggested on the bottle. Again, read up at a reputable site. After you've determined your dosage, stick with it long enough to see results or to be sure you will not have any. Some natural treatments take longer to manifest a result than pharmaceutical drugs, so you may want to give as long as three months for some supplements. Keep in mind that even the most effective remedies (aspirin, for instance) don't work for everyone and aren't effective every time even for those who are typically helped by them. We simply don't know why this is. For instance, ibuprofen (a common and highly effective analgesic) doesn't help me a bit. Your body chemistry is unique to you. Now, on to the supplement in question. L-theanine is synthesized from green tea, a natural product. It is said to have a calming effect, while at the same time promoting clear thought. This combination is unusual. We're all aware that a cup of strongly caffeinated coffee does help to clear the mind, but certainly does nothing to promote a calm and peaceful attitude. Likewise, a cup of warm milk or chamomile tea may bring a degree of calm but along with it comes unwanted sleepiness and fuzzy thinking. I cannot say L-theanine will work for you, but two people close to me have found it invaluable in dealing with extraordinary stress. There is no zombie-like effect, no sleepiness, no jitteriness - just a moderately calming quality and a feeling of the mind clearing in the same way that your mind clears as you pass from sleep to a wide-awake state. There are no side effects and no problems of dependency. Unlike some supplements that work over a long period of time, you will know right away if L-theanine is going to be helpful for you. The Life Extension Foundation, which makes this supplement, has been at the forefront of finding ways to make products more effectively cross the blood/brain barrier, making them more available for your body to use, and this is among the products they make that take effect very quickly. It has recently been discovered that there may be other benefits to L-theanine besides those affecting mood, including the possibility that stroke victims may suffer less damage if given L-theanine within the first 24 hours after stroke has occurred. For those who are dealing with great stress, especially the kind caused by overwork, L-theanine should be on your list of possibilities.

### ⭐⭐⭐⭐⭐ Review
*by K***A on September 27, 2022*

pues lo usé y me sentí más relajada y duermo con menos intermitencias que antes y lo que me impresionó es que funciono a pesar de que he estado tomando café diario y eso antes no pasaba por que el café me altera mucho el sueño, increíblemente me da sueño ahora cuando me debe de dar y se bajó la alteración nerviosa.

## Frequently Bought Together

- Life Extension L-Theanine, 100 mg, 60 Vegetarian Capsules — Supports a Calming & Mood Enhancing Effect, Amino Acid Derived From Tea - Gluten-Free, Non-GMO
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---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-29*