---
product_id: 792408716
title: "Doctor's Best L-Theanine Contains Suntheanine, Helps Reduce Stress & Sleep, Non-GMO, Gluten Free, Vegan, 150 mg (DRB-00197), 90 Count"
brand: "doctor's best"
price: "20004 Ft"
currency: HUF
in_stock: true
url: https://www.desertcart.hu/products/792408716-doctors-best-l-theanine-contains-suntheanine-helps-reduce-stress-sleep
store_origin: HU
region: Hungary
---

# Non-GMO, Vegan & Gluten-Free 150mg Suntheanine per capsule Crosses blood-brain barrier in 30 mins Doctor's Best L-Theanine Contains Suntheanine, Helps Reduce Stress & Sleep, Non-GMO, Gluten Free, Vegan, 150 mg (DRB-00197), 90 Count

**Brand:** doctor's best
**Price:** 20004 Ft
**Availability:** ✅ In Stock

## Summary

> 🧘‍♂️ Unlock calm clarity with every capsule!

## Quick Answers

- **What is this?** Doctor's Best L-Theanine Contains Suntheanine, Helps Reduce Stress & Sleep, Non-GMO, Gluten Free, Vegan, 150 mg (DRB-00197), 90 Count by doctor's best
- **How much does it cost?** 20004 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/792408716-doctors-best-l-theanine-contains-suntheanine-helps-reduce-stress-sleep)

## Best For

- doctor's best enthusiasts

## Why This Product

- Trusted doctor's best brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Clean & Conscious:** Non-GMO, gluten-free, and vegan capsules align with your mindful lifestyle.
- • **Pure Suntheanine Power:** 150 mg of patented, clinically studied L-Theanine for focused calm.
- • **Fast-Acting Brain Boost:** Crosses the blood-brain barrier within 30 minutes to promote relaxation without drowsiness.
- • **Stress Less, Sleep Better:** Clinically supported to reduce stress and improve sleep quality naturally.
- • **90 Capsules for Lasting Calm:** A 3-month supply designed to keep you balanced through busy days and restless nights.

## Overview

Doctor's Best L-Theanine delivers 150 mg of pure Suntheanine, a patented amino acid derived from green tea leaves, clinically proven to cross the blood-brain barrier within 30 minutes. This vegan, non-GMO, and gluten-free supplement supports stress reduction and improved sleep, offering a clean, effective solution for modern professionals seeking natural mental balance.

## Description

L-Theanine Contains Suntheanine, Helps Reduce Stress & Sleep, Non-GMO, Gluten Free, Vegan, 150 mg (DRB-00197), 90 Count

## Features

- Form: Capsules
- Count: 90
- Serving Size: 1 Capsule
- This is a vegetarian product
- Dietary Supplement

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Name | L-Theanine |
| Additives | Amino Acid |
| Allergen Information | Gluten Free |
| Weight | 0.15 Kilograms |
| Units | 90 Count |
| Serving Recommendation | One Capsule |
| Brand | Doctor's Best |
| Format | Capsule |
| Age Range Description | Adult |

## Product Details

- **Brand:** Doctor's Best
- **Flavour:** Unflavored
- **Primary supplement type:** multivitamin
- **Unit count:** 90 Count
- **Item form:** Capsule
- **Item weight:** 0.06 Kilograms
- **Item dimensions L x W x H:** 5.4 x 5.4 x 9.4 centimeters
- **Special ingredients:** Amino Acid
- **Diet type:** Gluten Free
- **Product benefits:** Stress Relief

## Images

![Doctor's Best L-Theanine Contains Suntheanine, Helps Reduce Stress & Sleep, Non-GMO, Gluten Free, Vegan, 150 mg (DRB-00197), 90 Count - Image 1](https://m.media-amazon.com/images/I/719zn9vom2L.jpg)

## Questions & Answers

**Q: How do you choose between their Suntheanine and their 5-HTP? Both seem to do the same thing.**
A: 5-HTP is the tryptophan-based intermediate to serotonin which most antidepressants work to increase or support.
It's more specifically targets serotonin, needed for a balanced mood.

Suntheanine, a patented and advanced form of L-Theanine, has a broader range of psychotherapeutic and neuro- cognitive benefits than does 5-HTP.

It works as an anti-anxiety from multiple paths. 1) It supports the levels of gaba to calm the brain 2)It blocks glutamate receptors in the brain from receiving an excitatory neurotrans-mitter 3) It induces Alpha Waves in the brain.

Additionally, as a small molecule powerful antioxidant, it crosses the blood brain barrier to reach neurons directly where it fight oxidation in them. 

This gives it the ability to fight or offer benefit against a wide range of age-related neuro-cognitive conditions such as memory loss, learning impairments, attention deficits, dementia, Alzheimer's etc.

**Q: Has anyone taken Suntheanine by opening the capsules and adding to liquid?  If so, how is the taste?**
A: My daughter, after first asking the doctor if it was safe, decided to try it with her Autistic child.  Since she can't swallow pills, my daughter opens the capsule and places it into applesauce or a similar food.   It still seems effective and my grandchild didn't seem to mind or notice any bad taste.  So, I assume if it can be placed in food, it should be fine to also place it in a liquid.  I hope this has helped you with your questions.

**Q: I see some theanine comes from China. I would prefer one produced in the USA. Does any ingrediant in this come from China?**
A: What is the country of origin for Doctor's Best products?Doctor's Best products are quality tested and manufactured in the United States using highly qualified cGMP manufacturers and raw material ingredients. Doctor's Best sources raw materials from around the world and ingredients are subject to the intense testing and verification regardless of geography of origin.- See more at: http://www.drbvitamins.com/products/suntheanine-l-theanine-150mg/drb-00197#sthash.wAlbJQD6.dpuf

**Q: Does this contain caffiene?**
A: It doesn't state anywhere on the bottle that it contains caffeine. I'm not sure, you will have to investigate further.

## Frequently Bought Together

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-02-01*