---
product_id: 17590198
title: "Klaire Labs L-Theanine - 100mg Suntheanine to Promote Promote Relaxation (60 Capsules)"
brand: "sfi health"
price: "€ 53.13"
currency: EUR
in_stock: true
reviews_count: 8
category: "Sfi Health"
url: https://www.desertcart.pt/products/17590198-klaire-labs-l-theanine-100mg-suntheanine-to-promote-promote-relaxation
store_origin: PT
region: Portugal
---

# 100mg pure Suntheanine L-Theanine Hypoallergenic & free from common allergens Supports serotonin, dopamine & norepinephrine Klaire Labs L-Theanine - 100mg Suntheanine to Promote Promote Relaxation (60 Capsules)

**Brand:** sfi health
**Price:** € 53.13
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your calm—relax smarter, not harder.

## Quick Answers

- **What is this?** Klaire Labs L-Theanine - 100mg Suntheanine to Promote Promote Relaxation (60 Capsules) by sfi health
- **How much does it cost?** € 53.13 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/17590198-klaire-labs-l-theanine-100mg-suntheanine-to-promote-promote-relaxation)

## Best For

- sfi health enthusiasts

## Why This Product

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

## Key Features

- • **Allergy-Safe Formula:** Free from milk, nuts, gluten, soy, and artificial additives—clean and sensitive-friendly.
- • **Calm Without Compromise:** Promotes deep relaxation without drowsiness, perfect for busy minds.
- • **Neurotransmitter Harmony:** Supports balanced brain chemistry by modulating key neurotransmitters.
- • **Clinically Patented Purity:** Suntheanine’s patented process ensures premium, bioavailable L-theanine.
- • **Trusted by Experts Since 1969:** Developed with healthcare practitioners for reliable, consistent quality.

## Overview

Klaire Labs L-Theanine delivers 100mg of Suntheanine, a patented pure form of L-theanine known for promoting relaxation without sedation. This hypoallergenic supplement supports neurotransmitter balance, including serotonin and dopamine, and is free from common allergens and artificial additives. Trusted by healthcare professionals since 1969, it’s designed for sensitive individuals seeking effective, clean relaxation support.

## Description

L-theanine, a unique amino acid compound found in green tea, is noted for its calming benefits.* Suntheanine brand pure L-theanine is produced through a patented manufacturing process. Studies with Suntheanine show it can promote relaxation without drowsiness.* Three Brands Become One: Since 1969, Klaire Labs has been dedicated to developing clean, efficacious nutritional supplements to ensure optimal outcomes for even the most sensitive individuals. This enduring commitment to quality is at the root of the unification with sister brands ProThera and Complementary Prescriptions. These three brands have unified with a modernized look based on the legacy Klaire Labs logo.

Review: Helps my anxiety a lot - Really great quality. I find it working better than the last bend I used. I take one at night and one again in the morning. Along with my other meditations it helps my anxiety a lot!
Review: Subtle relaxation - A supplement for relaxation is hard to find. I have used this one in other brands and can't say if I noticed much change in my mood. I now take this brand at night time to help settle down. I can say while the effect is subtle, it does reduce anxiousness and I have been able to sleep through the nights better. I think it is a bit pricey over other brands, but this one actually works. Reordering.

## Features

- Promote Relaxation - L-theanine is a unique amino acid compound found in green tea, and is noted for its calming benefits.*
- Suntheanine Pure L-Theanine - Suntheanine brand pure L-theanine is produced through a patented manufacturing process. Studies with Suntheanine show it may promote relaxation without drowsiness.*
- Neurotransmitter Support - L-theanine has been studied for its ability to reduce glutamate uptake and support the body's serotonin, dopamine, and norepinephrine excretion.*
- Hypoallergenic* - Keeping sensitives in mind, this product is free of the following common allergens: milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, soybeans, and yeast. Contains no artificial colors, flavors, or preservatives.
- Practitioner Trusted - Trusted by healthcare practitioners since 1969, Klaire Labs products are developed closely with physicians and are intended to be used as directed by a healthcare practitioner.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B00JUZZZ10 |
| Best Sellers Rank | #78,112 in Health & Household ( See Top 100 in Health & Household ) #3,357 in Blended Vitamin & Mineral Supplements |
| Customer Reviews | 4.6 4.6 out of 5 stars (99) |
| Date First Available  | July 30, 2014 |
| Manufacturer  | SFI Health |
| Product Dimensions  | 3 x 3 x 3 inches; 0.8 ounces |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** SFI Health
- **Flavor:** Unflavored
- **Item Form:** Capsule
- **Item Weight:** 0.05 Pounds
- **Item dimensions L x W x H:** 3 x 3 x 3 inches
- **Number of Items:** 1
- **Package Information:** Bottle
- **Product Benefits:** Hypoallergenic,Relaxation
- **Unit Count:** 60 Count

## Images

![Klaire Labs L-Theanine - 100mg Suntheanine to Promote Promote Relaxation (60 Capsules) - Image 1](https://m.media-amazon.com/images/I/61dofa66V9L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Helps my anxiety a lot
*by R***S on August 31, 2025*

Really great quality. I find it working better than the last bend I used. I take one at night and one again in the morning. Along with my other meditations it helps my anxiety a lot!

### ⭐⭐⭐⭐⭐ Subtle relaxation
*by S***N on March 1, 2025*

A supplement for relaxation is hard to find. I have used this one in other brands and can't say if I noticed much change in my mood. I now take this brand at night time to help settle down. I can say while the effect is subtle, it does reduce anxiousness and I have been able to sleep through the nights better. I think it is a bit pricey over other brands, but this one actually works. Reordering.

### ⭐⭐⭐⭐⭐ A must for any stressed out mom
*by C***E on May 31, 2024*

This stuff helps me so much. Benefits: much higher threshold for stress, gives the feeling of being able to ENJOY the present moment without letting my stress squash my joy. Inconveniences roll off my back. As a stay at home mom of two toddlers, I highly recommend this brand of l-theanine.

## Frequently Bought Together

- Klaire Labs L-Theanine - 100mg Suntheanine to Promote Promote Relaxation (60 Capsules)
- Klaire Labs Magnesium Glycinate Complex - Chelated Magnesium Blend for Optimal Absorption - Supports Healthy Bones, Muscles & Energy Levels - Gentle on Digestion (100 Capsules)
- Klaire Labs GABA - 420 Milligrams Gamma-Aminobutyric Acid, Neurotransmitter to Support Calm & Mood (60 Capsules)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-15*