---
product_id: 11002156
title: "Life Extension L-Tryptophan, 500 mg, Encourages Healthy Serotonin Levels and Promotes Healthy Sleep, Mood, Stress Response & Satiety, Gluten-Free, Non-GMO, Vegetarian, 90 Capsules"
brand: "life extension"
price: "฿1940"
currency: THB
in_stock: true
reviews_count: 8
category: "Life Extension"
url: https://www.desertcart.co.th/products/11002156-life-extension-l-tryptophan-500-mg-encourages-healthy-serotonin-levels
store_origin: TH
region: Thailand
---

# Supports restful, restorative sleep Gluten-free, Non-GMO, Vegetarian 500 mg L-Tryptophan per capsule Life Extension L-Tryptophan, 500 mg, Encourages Healthy Serotonin Levels and Promotes Healthy Sleep, Mood, Stress Response & Satiety, Gluten-Free, Non-GMO, Vegetarian, 90 Capsules

**Brand:** life extension
**Price:** ฿1940
**Availability:** ✅ In Stock

## Summary

> 🌙 Sleep smart, stress less, live fuller — your serotonin secret weapon!

## Quick Answers

- **What is this?** Life Extension L-Tryptophan, 500 mg, Encourages Healthy Serotonin Levels and Promotes Healthy Sleep, Mood, Stress Response & Satiety, Gluten-Free, Non-GMO, Vegetarian, 90 Capsules by life extension
- **How much does it cost?** ฿1940 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/11002156-life-extension-l-tryptophan-500-mg-encourages-healthy-serotonin-levels)

## 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

- • **Stress-Resilient Lifestyle:** Modulates your body's stress response so you stay calm and collected under pressure.
- • **Clean, Pure, and Transparent:** Non-GMO, gluten-free, vegetarian capsules made in the USA with verified quality.
- • **90 Capsules for Lasting Wellness:** A 1-3 month supply designed to seamlessly fit into your daily health routine.
- • **Serotonin Boost for Mood & Sleep:** Elevate your natural serotonin levels to unlock better sleep and a balanced mood.
- • **Satiety Support for Mindful Living:** Feel fuller longer, helping you maintain focus and avoid unnecessary cravings.

## Overview

Life Extension L-Tryptophan delivers 500 mg of pure L-tryptophan per capsule to naturally support serotonin production, promoting restful sleep, balanced mood, and healthy stress response. This gluten-free, non-GMO, vegetarian formula comes in a 90-capsule bottle, offering a clean, science-backed supplement designed for modern wellness seekers aiming to optimize mental and emotional health.

## Description

L-Tryptophan is a novel formula for healthy sleep and mood. It contains 500 mg of L-tryptophan to encourage healthy serotonin levels and support restful sleep and a healthy mood. It also helps modulate your body’s natural stress response and promotes satiety. L-Tryptophan contains 90 vegetarian capsules, enough for a 1- to 3-month supply. This gluten-free formula is made with non-GMO ingredients.

Review: I don’t want to run out of these? - My doctor told me about these. I had been taking ambien every few days. My son is a pharmacist and told me they can lead to early onset dementia. At 73 I sure didn’t want to take a chance so gave these a try. I literally went cold turkey successfully to get off the ambien! I still get up in the night to use the restroom but these work great! No grogginess or ambien or other sleep aid hangovers. I know it is expensive but I am willing to pay for a good night’s sleep!
Review: Wonderful for a good night's sleep - So helpful for a good night's sleep.. I take two in the afternoon then two at dinner time. The difference between taking them and not taking them is like night and day in terms of my sleep.

## Features

- Support your serotonin levels—Serotonin is a neurotransmitter that is involved in restful sleep and positive mood. Your body needs adequate levels of the amino acid tryptophan to make it.
- Get some shuteye—Modern lifestyles make it hard to get enough rest. L-Tryptophan encourages serotonin production, which in turn promotes restful, restorative sleep.
- Mood & satiety—Tryptophan promotes healthy mood as well as satiety, the sensation of being full. Speaking of mood: tryptophan encourages your body’s healthy response to stress.
- Ingredients matter—We use the finest raw ingredients with the quality and purity you deserve. The majority of our products are non-GMO, gluten-free and manufactured in the USA—and a Certificate of Analysis is available for every one.
- Live your healthiest life—We believe the answers to a healthier life are in reach, and that scientific research is the key to getting there. That’s why so many of our formulas feature specific ingredients and amounts based on scientific studies.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B00CC1S2IC |
| Best Sellers Rank | #43,582 in Health & Household ( See Top 100 in Health & Household ) #45 in 5-HTP Nutritional Supplements #2,711 in Sales & Deals |
| Customer Reviews | 4.6 4.6 out of 5 stars (231) |
| Date First Available  | April 12, 2013 |
| Is Discontinued By Manufacturer  | No |
| Item model number  | 01722 |
| Manufacturer  | Life Extension |
| Product Dimensions  | 2.5 x 2.5 x 4 inches; 3.68 ounces |

## Product Details

- **Brand:** Life Extension
- **Diet Type:** Vegetarian
- **Flavor:** Unflavored
- **Item Form:** Capsule
- **Item Weight:** 3.68 ounces
- **Item dimensions L x W x H:** 2.5 x 2.5 x 4 inches
- **Primary Supplement Type:** L-Tryptophan
- **Special Ingredients:** L-Tryptophan
- **Unit Count:** 90.00 Count

## Images

![Life Extension L-Tryptophan, 500 mg, Encourages Healthy Serotonin Levels and Promotes Healthy Sleep, Mood, Stress Response & Satiety, Gluten-Free, Non-GMO, Vegetarian, 90 Capsules - Image 1](https://m.media-amazon.com/images/I/7109f0fNxAL.jpg)
![Life Extension L-Tryptophan, 500 mg, Encourages Healthy Serotonin Levels and Promotes Healthy Sleep, Mood, Stress Response & Satiety, Gluten-Free, Non-GMO, Vegetarian, 90 Capsules - Image 2](https://m.media-amazon.com/images/I/714g2bSF+rL.jpg)
![Life Extension L-Tryptophan, 500 mg, Encourages Healthy Serotonin Levels and Promotes Healthy Sleep, Mood, Stress Response & Satiety, Gluten-Free, Non-GMO, Vegetarian, 90 Capsules - Image 3](https://m.media-amazon.com/images/I/71Dz5evDesL.jpg)
![Life Extension L-Tryptophan, 500 mg, Encourages Healthy Serotonin Levels and Promotes Healthy Sleep, Mood, Stress Response & Satiety, Gluten-Free, Non-GMO, Vegetarian, 90 Capsules - Image 4](https://m.media-amazon.com/images/I/71GPDkLiYfL.jpg)
![Life Extension L-Tryptophan, 500 mg, Encourages Healthy Serotonin Levels and Promotes Healthy Sleep, Mood, Stress Response & Satiety, Gluten-Free, Non-GMO, Vegetarian, 90 Capsules - Image 5](https://m.media-amazon.com/images/I/71NT9Gl1DZL.jpg)

## Questions & Answers

**Q: What is L-tryptophan?**
A: The essential amino acid L-tryptophan acts as a precursor of serotonin, and your body needs L-tryptophan to maintain healthy serotonin levels.

**Q: How do I use L-tryptophan?**
A: Our premium-quality L-tryptophan formula helps maintain healthy tryptophan levels in the body and supports healthy sleep and mood, a healthy stress response and more.

**Q: When is the best time to take L-tryptophan?**
A: This L-tryptophan formula should be taken one to three times daily on an empty stomach, or as recommended by a healthcare practitioner.

## Customer Reviews

### ⭐⭐⭐⭐⭐ I don’t want to run out of these?
*by T***S on April 4, 2024*

My doctor told me about these. I had been taking ambien every few days. My son is a pharmacist and told me they can lead to early onset dementia. At 73 I sure didn’t want to take a chance so gave these a try. I literally went cold turkey successfully to get off the ambien! I still get up in the night to use the restroom but these work great! No grogginess or ambien or other sleep aid hangovers. I know it is expensive but I am willing to pay for a good night’s sleep!

### ⭐⭐⭐⭐⭐ Wonderful for a good night's sleep
*by R***Y on August 29, 2025*

So helpful for a good night's sleep.. I take two in the afternoon then two at dinner time. The difference between taking them and not taking them is like night and day in terms of my sleep.

### ⭐⭐⭐⭐⭐ Very powerful stuff! If you're taking any mental health medication, talk to your doctor fist.
*by D***S on October 14, 2025*

Wow, got me back on track and still have quite a few left. Follow the directions to the T. Do not eat any protein 30 min before or after, otherwise it'll chain up with the other Amino acids!

## Frequently Bought Together

- Life Extension L-Tryptophan, 500 mg, Encourages Healthy Serotonin Levels and Promotes Healthy Sleep, Mood, Stress Response & Satiety, Gluten-Free, Non-GMO, Vegetarian, 90 Capsules
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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-01-23*