---
product_id: 461070713
title: "Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets"
brand: "life extension"
price: "$72.18"
currency: USD
in_stock: true
reviews_count: 5
category: "Life Extension"
url: https://www.desertcart.us/products/461070713-life-extension-theanine-xr-stress-relief-l-theanine-promotes-calm
store_origin: US
region: United States of America
---

# Extended-release tech for all-day calm Non-GMO, gluten-free, vegetarian purity Supports wakeful relaxation & brain waves Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets

**Brand:** life extension
**Price:** $72.18
**Availability:** ✅ In Stock

## Summary

> 🧘‍♂️ Unlock calm focus—because stress doesn’t stand a chance.

## Quick Answers

- **What is this?** Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets by life extension
- **How much does it cost?** $72.18 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/461070713-life-extension-theanine-xr-stress-relief-l-theanine-promotes-calm)

## 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

- • **All-Day Zen Mode:** Extended-release L-theanine delivers sustained stress relief from morning meetings to evening unwind.
- • **Brainwave Balance:** Supports healthy neurotransmitters for a wakeful, meditative state that powers productivity.
- • **Clean & Conscious:** Non-GMO, gluten-free, and vegetarian formula crafted with premium ingredients in the USA.
- • **Stay Calm, Stay Sharp:** Promotes relaxation without drowsiness—perfect for busy professionals.
- • **Trusted Science, Trusted Brand:** Backed by research and a 4.6-star rating, Life Extension ensures quality you can count on.

## Overview

Life Extension Theanine XR™ is a premium L-theanine supplement designed for professionals seeking calm without sedation. Featuring extended-release technology, it supports a balanced stress response and wakeful relaxation throughout the day. Non-GMO, gluten-free, and vegetarian, this USA-made formula leverages scientifically-backed ingredients to promote mental clarity and resilience in hectic environments.

## Description

L-theanine, an amino acid found in green tea, can support relaxation. This compound supports a healthy response to stress to maintain a sense of zen and stay calm and collected all day long. L-theanine does this by supporting the activity of glutamate, an excitatory neurotransmitter, while also promoting healthy levels of GABA, a calming neurotransmitter. When these neurotransmitters work together, they can help support relaxation. Since the body metabolizes L-theanine quickly, this formula includes extended-release technology for benefits both immediately and over time. Vegetarian, non-GMO, gluten-free and manufactured in the USA.

Review: Can’t live without! Excellent for histamine sensitivity - I only use life extension. I have autoimmune issues. Gut issues from it. Great for histamine resistance , gut and inflammation in the gut. Not about the energy . Excellent for acid reflux, gerd on histamine related food and wine. No side effects . Easy to swallow .
Review: Good brand - Great product and brand

## Features

- Promotes a sense of calm – L-theanine helps support a healthy stress response and the production of calming neurotransmitters to better achieve a state of zen when life gets hectic.
- Encourages wakeful relaxation – Calming the mind doesn’t have to come with sleepiness. L-theanine supports healthy brain wave activity, promoting a wakeful state similar to meditation.
- Extended release for all-day support – The body metabolizes L-theanine quickly. This L-theanine supplement provides immediate and extended release for a long-lasting state of calm throughout the day.
- Ingredients matter – We use only the finest raw ingredients with the purity and potency you deserve. The majority of our products are non-GMO, gluten-free and manufactured in the USA—and a Certificate of Analysis is available for every one.
- Live your healthiest life – We believe the answers to a healthier life are within reach, and that scientific research is the key to getting us there. That’s why so many of our formulas feature specific ingredients and amounts based on scientific studies.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09HVDD48T |
| Age Range Description | Adult |
| Allergen Information | Gluten Free, Non-GMO |
| Best Sellers Rank | #14,549 in Health ( See Top 100 in Health ) #70 in Stress Reduction Products |
| Brand | Life Extension |
| Brand Name | Life Extension |
| Color | Off White |
| Container Type | Bottle |
| Customer Reviews | 4.6 out of 5 stars 389 Reviews |
| Diet Type | Vegetarian |
| Dosage Form | Tablets |
| Flavor | Unflavored |
| Flavour | Unflavored |
| Item Dimensions | 44 x 44 x 85 millimeters |
| Item Form | Tablet |
| Item Nype Name | Theanine XR Stress Relief |
| Item Weight | 0.12 Pounds |
| Item form | Tablet |
| Item weight | 0.12 Pounds |
| Manufacturer | Life Extension |
| Manufacturer Part Number | 02429 |
| Material Features | GMO Free |
| Material Type Free | Gluten Free |
| Model Name | Theanine XR Stress Relief – Stay Calm in The Face of Daytime Stress – Gluten-Free – Non-GMO – Vegetarian – 30 Vegetarian Tablets |
| Model Number | 02429 |
| Number of Items | 1 |
| Primary Supplement Type | L-Theanine |
| Primary supplement type | L-Theanine |
| Product Benefits | Promotes relaxation—without making you sleepy |
| Special Ingredients | Amino Acid |
| Specific Uses For Product | Mood Support, Stress Management |
| Supplement Formulation | Multi-Supplement |
| Total Servings Per Container | 30.0 |
| UPC | 737870242932 |
| Unit Count | 30 Count |
| Unit count | 30 Count |

## Product Details

- **Brand:** Life Extension
- **Diet type:** Vegetarian
- **Flavour:** Unflavored
- **Item dimensions L x W x H:** 44 x 44 x 85 millimeters
- **Item form:** Tablet
- **Item weight:** 0.12 Pounds
- **Primary supplement type:** L-Theanine
- **Product benefits:** Promotes relaxation—without making you sleepy
- **Special ingredients:** Amino Acid
- **Unit count:** 30 Count

## Images

![Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - Image 1](https://m.media-amazon.com/images/I/71XX1ZMZ88L.jpg)
![Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - Image 2](https://m.media-amazon.com/images/I/713kJrwqCAL.jpg)
![Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - Image 3](https://m.media-amazon.com/images/I/81rN1Qrcv5L.jpg)
![Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - Image 4](https://m.media-amazon.com/images/I/71oh8d6bjOL.jpg)
![Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - Image 5](https://m.media-amazon.com/images/I/61oUn-vqxgL.jpg)

## Questions & Answers

**Q: What does taking L-theanine do?**
A: Taking L-theanine, a relaxing amino acid found in green tea, can help promote a sense of calm and support a healthy stress response when life gets hectic.

**Q: Is it OK to take L-theanine daily?**
A: Taking L-theanine daily is generally recognized as safe, so it can be taken daily as needed. But you should always check the label on any supplement for proper usage instructions.

**Q: When should I take L-theanine for stress?**
A: L-theanine can be taken any time of the day, especially when it comes to stress. If you’re not sure if you should take L-theanine for stress, consult with your healthcare practitioner before supplementing.

**Q: Is ashwagandha or L-theanine better for stress?**
A: While both ashwagandha and L-theanine are great options for supporting a healthy stress response, one is not necessarily better than the other. In fact, you can even take them at the same time to complement their stress support benefits.

**Q: Can you take magnesium and L-theanine together?**
A: Much like L-theanine and ashwagandha, both magnesium and L-theanine are known for their calming and relaxing properties. Taking them together may have complementary effects to promote stress relief and overall well-being.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Can’t live without! Excellent for histamine sensitivity
*by K***. on 13 July 2026*

I only use life extension. I have autoimmune issues. Gut issues from it. Great for histamine resistance , gut and inflammation in the gut. Not about the energy . Excellent for acid reflux, gerd on histamine related food and wine. No side effects . Easy to swallow .

### ⭐⭐⭐⭐⭐ Good brand
*by C***O on 17 December 2023*

Great product and brand

### ⭐⭐⭐⭐⭐ Elegí el mejor
*by C***E on 14 July 2026*

Llego muy rápido, en excelente condiciones tengo 40 años y espero q me ayude a mejorar mi energía y q mi calidad de salud sea favorable

## Frequently Bought Together

- Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets
- Life Extension Neuro-Mag Magnesium L-Threonate, Magnesium L-threonate, Memory Health, Quick Thinking, Cognitive Health Support, Vegetarian, Non-GMO, 90 Vegetarian Capsules
- Life Extension Optimized Ashwagandha - Stress Management Supplement for a Healthy Stress Response, Focus, Memory, Stress Relief - Vegetarian, Gluten-Free, Non-GMO, 60 Capsules

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-23*