---
product_id: 381418061
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: "€ 46.31"
currency: EUR
in_stock: true
reviews_count: 11
category: "Life Extension"
url: https://www.desertcart.hr/products/381418061-life-extension-theanine-xr-stress-relief-l-theanine-promotes-calm
store_origin: HR
region: Croatia
---

# 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:** € 46.31
**Availability:** ✅ In Stock

## Summary

> 🧘‍♂️ Stay Calm, Stay Sharp — Stress Relief That Works All Day Long

## 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?** € 46.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/381418061-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:** Experience sustained calm with advanced extended-release L-theanine technology that keeps stress at bay from morning to night.
- • **Pure & Clean Formula:** Crafted with non-GMO, gluten-free, and vegetarian ingredients, ensuring premium quality and mindful wellness.
- • **Wakeful Relaxation Boost:** Promotes brain wave patterns linked to meditation, helping you stay calm without the fog or drowsiness.
- • **Scientifically Backed Stress Support:** Formulated based on research to balance calming neurotransmitters like GABA and glutamate for optimal mood management.
- • **Made in the USA with Global Standards:** Manufactured under strict quality controls with a Certificate of Analysis for transparency and trust.

## Overview

Life Extension Theanine XR™ Stress Relief delivers a scientifically formulated, extended-release L-theanine supplement designed to promote a calm, wakeful state throughout your busy day. Non-GMO, gluten-free, and vegetarian, this premium formula supports healthy neurotransmitter balance to reduce stress without drowsiness, all made in the USA with rigorous quality standards.

## 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: Helps me relax so I can sleep well. - I have used this product for years. Helps relax me at night and helps me rest well without feeling like I have a hangover in the morning. Recommend using it for a few months then taking a break so your body won't build up a resistance to it.
Review: Amazing product. - It works, its a glutamate antagonist. I use it sparingly as needed, so I can trust it works when I need it to.

## 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 the finest raw ingredients chosen for quality and purity. The majority of our products are non-GMO, gluten-free and manufactured in the USA with globally sourced ingredients, and a Certificate of Analysis is available for each.
- 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 |
| ASIN  | B09HVDD48T |
| Age Range Description | Adult |
| Allergen Information | Gluten Free |
| Best Sellers Rank | #15,659 in Health & Household ( See Top 100 in Health & Household ) #435 in Blended Vitamin & Mineral Supplements |
| Brand Name | Life Extension |
| Color | Off White |
| Container Type | Bottle |
| Customer Reviews | 4.6 4.6 out of 5 stars (324) |
| Date First Available  | October 13, 2021 |
| Diet Type | Vegetarian |
| Dosage Form | Tablets |
| Flavor | Unflavored |
| Item Dimensions | 1.75 x 1.75 x 3.33 inches |
| Item Form | Tablet |
| Item Nype Name | Theanine XR Stress Relief |
| Item Weight | 0.5 Grams |
| Item model number  | 02429 |
| Manufacturer | Life Extension |
| Manufacturer  | Life Extension |
| Manufacturer Part Number | 02429 |
| Material Features | Non-GMO |
| Material Type Free | Gluten Free |
| Model Name | Theanine XR™ Stress Relief |
| Model Number | 02429 |
| Number of Items | 1 |
| Primary Supplement Type | L-Theanine |
| Product Benefits | All day stress support with extended-release technology, Encourages brain wave patterns associated with wakeful relaxation, Promotes relaxation—without making you sleepy |
| Product Dimensions  | 1.75 x 1.75 x 3.33 inches; 0.02 ounces |
| Special Ingredients | Calcium [from dicalcium phosphate], L-Theanine [as AlphaWave® Theanine XR™], Phosphorus [from dicalcium phosphate] |
| Specific Uses For Product | Mood Support, Stress Management |
| Supplement Formulation | Multi-Supplement |
| Total Servings Per Container | 30.0 |
| UPC | 737870242932 |
| Unit Count | 30.0 Count |

## Product Details

- **Brand:** Life Extension
- **Diet Type:** Vegetarian
- **Flavor:** Unflavored
- **Item Form:** Tablet
- **Item Weight:** 0.5 Grams
- **Item dimensions L x W x H:** 1.75 x 1.75 x 3.33 inches
- **Primary Supplement Type:** L-Theanine
- **Unit Count:** 30.0 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)

## Available Options

This product comes in different **Size** options.

## 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

### ⭐⭐⭐⭐⭐ Helps me relax so I can sleep well.
*by S***L on February 21, 2026*

I have used this product for years. Helps relax me at night and helps me rest well without feeling like I have a hangover in the morning. Recommend using it for a few months then taking a break so your body won't build up a resistance to it.

### ⭐⭐⭐⭐⭐ Amazing product.
*by J***E on June 15, 2025*

It works, its a glutamate antagonist. I use it sparingly as needed, so I can trust it works when I need it to.

### ⭐⭐⭐⭐⭐ They keep me relaxed throughout long flights
*by M***O on November 29, 2025*

They work well. Especially for long flights. Calming. 😊

## 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 Croatia*
*Store origin: HR*
*Last updated: 2026-03-08*