---
product_id: 547663553
title: "New: L-Theanine - Natural Green Tea Extract (Decaf) - 120 Capsules - 300mg L-Theanine per Serving - Sleep & Relaxation Support - Mental Clarity - Non-Synthetic Theanine - UK Made - Zero Additives"
brand: "time health"
price: "¥10138"
currency: JPY
in_stock: true
reviews_count: 8
category: "Time Health"
url: https://www.desertcart.jp/products/547663553-new-l-theanine-natural-green-tea-extract-decaf-120-capsules
store_origin: JP
region: Japan
---

# 100% non-synthetic, zero additives 300mg natural L-Theanine per serving UK-made, GMP certified quality New: L-Theanine - Natural Green Tea Extract (Decaf) - 120 Capsules - 300mg L-Theanine per Serving - Sleep & Relaxation Support - Mental Clarity - Non-Synthetic Theanine - UK Made - Zero Additives

**Brand:** time health
**Price:** ¥10138
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your focus and unwind naturally—because your mind deserves the best.

## Quick Answers

- **What is this?** New: L-Theanine - Natural Green Tea Extract (Decaf) - 120 Capsules - 300mg L-Theanine per Serving - Sleep & Relaxation Support - Mental Clarity - Non-Synthetic Theanine - UK Made - Zero Additives by time health
- **How much does it cost?** ¥10138 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/547663553-new-l-theanine-natural-green-tea-extract-decaf-120-capsules)

## Best For

- time health enthusiasts

## Why This Product

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

## Key Features

- • **Eco-Friendly Impact:** Join a community planting over 82,000 trees—one capsule, one tree, one better planet.
- • **Premium UK Craftsmanship:** Manufactured under strict GMP standards ensuring top-tier quality you can trust.
- • **Pure Calm in Every Capsule:** Harness the natural power of decaf green tea extract for stress relief and mental clarity.
- • **Clean & Conscious Nutrition:** Vegan, additive-free formula with no fillers or binders—just pure relaxation.
- • **Clinically Recommended Dosage:** 300mg per serving aligns with expert-backed sleep and focus protocols.

## Overview

This UK-made L-Theanine supplement delivers 300mg of pure, non-synthetic green tea extract per serving to support natural sleep, relaxation, and mental clarity. Free from additives and fillers, it’s vegan-friendly and crafted under GMP standards. Backed by neuroscience and eco-conscious with every purchase planting a tree, it’s the smart choice for professionals seeking calm focus and sustainable wellness.

## Description

New: L-Theanine - Natural Green Tea Extract (Decaf) - 120 Capsules - 300mg L-Theanine per Serving - Sleep & Relaxation Support - Mental Clarity - Non-Synthetic Theanine - UK Made - Zero Additives : desertcart.co.uk: Health & Personal Care

Review: Great! - Helps focus with my adhd - just have one in the morning with coffee, so good!
Review: L-THEANINE - Very good quality 👍

## Features

- ✔️NATURAL SLEEP, RELAXATION AND FOCUS SUPPORT. L-theanine, an amino acid commonly found in green tea, offers several notable benefits. L-theanine has a calming effect on the mind- by increasing alpha wave activity, L-theanine promotes relaxation and helps manage symptoms of stress. This makes it an excellent natural option for individuals seeking a sense of tranquility and mental clarity.
- ✔️300MG PER 2 CAPSULE SERVING, RECOMMENDED BY EXPERTS. Leading neuroscientist Dr. Andrew Huberman recommends taking L-theanine as part of the 'sleep cocktail', a combination of powerful supplements (L-Theanine, Magnesium, and Apigenin) that work synergistically to improve the quality and duration of sleep.
- ✔️100% NON SYNTHETIC, DECAFFEINATED GREEN TEA EXTRACT, VEGAN WITH NO FILLERS, BINDERS OR OTHER ADDITIVES. Many L-Theanine products on the market are 100% synthetic, ours is naturally extracted from green tea (decaffeinated). At Time Health we believe in clean nutrition which is why you won't find any nasty stuff in our products including any binders, fillers or additives, unlike some of our competitors.
- ✔️UK MADE & HIGH QUALITY. This product is manufactured in the UK to GMP standards, ensuring the highest quality.
- ✔️OVER 82,000 TREES PLANTED AND COUNTING. We are proud supporters of Ecologi’s reforestation projects and plant a tree with every single order!
- Please note: packaging may vary.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CB8SGRWZ |
| ASIN  | B0CB8SGRWZ |
| Age Range Description | Adult |
| Best Sellers Rank | 9,059 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 79 in Stress & Anxiety Relief |
| Brand | Time Health |
| Customer Reviews | 4.5 4.5 out of 5 stars (132) |
| Customer reviews | 4.5 4.5 out of 5 stars (132) |
| Date First Available | 11 April 2023 |
| Format | Capsule |
| Manufacturer  | Time Health Ltd |
| Manufacturer reference  | 5060808512117 |
| Package Dimensions  | 10.9 x 5.3 x 5.2 cm; 90 g |
| Units | 120.00 count |

## Product Details

- **Brand:** Time Health
- **Item form:** Capsule
- **Item package quantity:** 1
- **Manufacturer:** Time Health Ltd
- **Package information:** Bag

## Images

![New: L-Theanine - Natural Green Tea Extract (Decaf) - 120 Capsules - 300mg L-Theanine per Serving - Sleep & Relaxation Support - Mental Clarity - Non-Synthetic Theanine - UK Made - Zero Additives - Image 1](https://m.media-amazon.com/images/I/61Exw6GyNjL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great!
*by A***E on 21 September 2025*

Helps focus with my adhd - just have one in the morning with coffee, so good!

### ⭐⭐⭐⭐⭐ L-THEANINE
*by I***S on 3 October 2025*

Very good quality 👍

### ⭐⭐⭐⭐⭐ Seems to help in the day
*by A***R on 24 March 2025*

Helped in the day, but not for sleep sadly.

## Frequently Bought Together

- New: L-Theanine - Natural Green Tea Extract (Decaf) - 120 Capsules - 300mg L-Theanine per Serving - Sleep & Relaxation Support - Mental Clarity - Non-Synthetic Theanine - UK Made - Zero Additives
- Magtein® Magnesium – 120 Capsules – High Strength 2100mg – Pullulan Capsules – UK Made to GMP & HACCP Standards – Zero Additives
- Apigenin - 50mg x 120 Capsules - 98%+ Purity - Optimal Dose for Sleep & Relaxation Support - NAD+ Booster - Grapefruit Source - UK Made - GMP Standards - Zero Additives (120 Count (Pack of 1))

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**Shop now:** [https://www.desertcart.jp/products/547663553-new-l-theanine-natural-green-tea-extract-decaf-120-capsules](https://www.desertcart.jp/products/547663553-new-l-theanine-natural-green-tea-extract-decaf-120-capsules)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-08*