---
product_id: 722774760
title: "Life Extension Theanine XR Stress Relief – Stay Calm in The Face of Daytime Stress – Gluten-Free – Non-GMO – Vegetarian – 30 Vegetarian Tablets"
brand: "life extension"
price: "¥15830"
currency: JPY
in_stock: true
category: "Life Extension"
url: https://www.desertcart.jp/products/722774760-life-extension-theanine-xr-stress-relief-stay-calm-in-face
store_origin: JP
region: Japan
---

# Extended-release for all-day calm Non-GMO & gluten-free purity Supports brain’s natural stress response Life Extension Theanine XR Stress Relief – Stay Calm in The Face of Daytime Stress – Gluten-Free – Non-GMO – Vegetarian – 30 Vegetarian Tablets

**Brand:** life extension
**Price:** ¥15830
**Availability:** ✅ In Stock

## Summary

> 🧘‍♂️ Stay cool, calm, and collected—stress relief that keeps pace with your day.

## Quick Answers

- **What is this?** Life Extension Theanine XR Stress Relief – Stay Calm in The Face of Daytime Stress – Gluten-Free – Non-GMO – Vegetarian – 30 Vegetarian Tablets by life extension
- **How much does it cost?** ¥15830 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/722774760-life-extension-theanine-xr-stress-relief-stay-calm-in-face)

## 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

- • **Brainwave Zen Mode:** Mimics meditative brain activity to keep you focused and serene during hectic workdays.
- • **Clean & Conscious Formula:** Crafted with non-GMO, gluten-free ingredients for mindful wellness that fits your lifestyle.
- • **Steady Calm, All Day Long:** Experience sustained relaxation without drowsiness thanks to advanced extended-release technology.
- • **Trusted Legacy of Quality:** Over 40 years of research-driven formulations made in the USA with rigorous purity standards.
- • **Stress Defense, Scientifically Backed:** Balances neurotransmitters to cool stress exciters and boost calming GABA for mental resilience.

## Overview

Life Extension Theanine XR delivers a scientifically formulated, extended-release L-theanine supplement designed to promote non-drowsy relaxation and support healthy stress response. Made with premium non-GMO, gluten-free ingredients, this vegetarian tablet offers all-day calm by modulating brain neurotransmitters and mimicking meditative brainwave patterns, backed by over four decades of research and quality manufacturing in the USA.

## Description

Theanine XR provides a steady stream of the “feel good” amino acid, L-theanine, to help you stay calm, cool, and collected all day long

## Features

- HELPS YOU RELAX – You’ve probably heard that green tea can help you relax. One reason for this is the amino acid L-theanine, which is found in green tea. And our newest theanine formula has extended-release technology, so you feel good all day long.
- SIMILAR TO MEDITATING – Theanine works by encouraging brain-wave activity that is similar to meditating. But while a mediation session might make you feel like taking a nap, theanine is non-drowsy.
- STRESS LESS – Theanine helps cool down “excitement” neurotransmitters like glutamate while helping to support levels of GABA, a calming neurotransmitter. The end result? A healthy response to stress. Speaking of stress: theanine can also help protect your brain cells from oxidative stress—which is always a good thing!
- INGREDIENTS MATTER - Sourced using only the finest raw ingredients with the purity and potency your body deserves. This product is certified non-GMO and gluten-free. Manufactured in the USA and a Certificate of Analysis is available for every product we produce.
- LIVE YOUR HEALTHIEST LIFE - For over 40 years, we’ve been developing advanced, effective formulas made with the highest standards and based on the latest scientific findings. We believe the answers to a healthier, richer life are within reach and that rigorous scientific research is the path to get us there. Our formulations are created using the exact ingredients and dosages used in the studies that inspired them, ensuring that maximum bioavailability and efficacy are achieved.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09HVDD48T |
| Allergen Information | Gluten Free, Non-GMO |
| Brand | Life Extension |
| Colour | ... |
| Customer Reviews | 4.6 out of 5 stars 398 Reviews |
| Dosage Form | Tablets |
| Flavor | Unflavoured |
| Flavour | Unflavoured |
| Item Dimensions | 44 x 44 x 85 Millimeters |
| Item Form | Tablet |
| Item Nype Name | Theanine XR Stress Relief |
| Item Weight | 54 g |
| Item dimensions L x W x H | 44 x 44 x 85 Millimeters |
| Manufacturer | Life Extension |
| Manufacturer Part Number | 02429 |
| Material Features | GMO Free |
| Material Type Free | Gluten Free |
| Model number | 02429 |
| Number of Items | 1 |
| Product Benefits | Stress Relief |
| UPC | 737870242932 |

## Product Details

- **Allergen Information:** Gluten Free, Non-GMO
- **Brand:** Life Extension
- **Colour:** ...
- **Dosage Form:** Tablets
- **Flavour:** Unflavoured
- **Item Form:** Tablet
- **Item Weight:** 0.12 Pounds
- **Item dimensions L x W x H:** 44 x 44 x 85 Millimeters
- **Number of Items:** 1
- **Product Benefits:** Stress Relief

## Images

![Life Extension Theanine XR Stress Relief – Stay Calm in The Face of Daytime Stress – Gluten-Free – Non-GMO – Vegetarian – 30 Vegetarian Tablets - Image 1](https://m.media-amazon.com/images/I/41MOCGk5XsL.jpg)
![Life Extension Theanine XR Stress Relief – Stay Calm in The Face of Daytime Stress – Gluten-Free – Non-GMO – Vegetarian – 30 Vegetarian Tablets - Image 2](https://m.media-amazon.com/images/I/41ci2SAKRuL.jpg)
![Life Extension Theanine XR Stress Relief – Stay Calm in The Face of Daytime Stress – Gluten-Free – Non-GMO – Vegetarian – 30 Vegetarian Tablets - Image 3](https://m.media-amazon.com/images/I/51ktSen+O5L.jpg)
![Life Extension Theanine XR Stress Relief – Stay Calm in The Face of Daytime Stress – Gluten-Free – Non-GMO – Vegetarian – 30 Vegetarian Tablets - Image 4](https://m.media-amazon.com/images/I/41BS+20OQ-L.jpg)
![Life Extension Theanine XR Stress Relief – Stay Calm in The Face of Daytime Stress – Gluten-Free – Non-GMO – Vegetarian – 30 Vegetarian Tablets - Image 5](https://m.media-amazon.com/images/I/41uWS-T-XtL.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.

## 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 Japan*
*Store origin: JP*
*Last updated: 2026-10-31*