---
product_id: 262622126
title: "L-Tryptophan 500 mg – L-Tryptophan Supplement for Healthy Sleep and Stress Response Support – Gluten-Free, Non-GMO, Vegetarian – 90 Capsules"
brand: "life extension"
price: "A$53"
currency: AUD
in_stock: true
reviews_count: 5
category: "Life Extension"
url: https://www.desertcart.com.au/products/262622126-l-tryptophan-500-mg-l-tryptophan-supplement-for-healthy-sleep
store_origin: AU
region: Australia
---

# Gluten-Free, Non-GMO, Vegetarian formula 500 mg pure L-Tryptophan per capsule Supports restful, restorative sleep L-Tryptophan 500 mg – L-Tryptophan Supplement for Healthy Sleep and Stress Response Support – Gluten-Free, Non-GMO, Vegetarian – 90 Capsules

**Brand:** life extension
**Price:** A$53
**Availability:** ✅ In Stock

## Summary

> 🌙 Sleep smarter, stress less — wake up winning every day!

## Quick Answers

- **What is this?** L-Tryptophan 500 mg – L-Tryptophan Supplement for Healthy Sleep and Stress Response Support – Gluten-Free, Non-GMO, Vegetarian – 90 Capsules by life extension
- **How much does it cost?** A$53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/262622126-l-tryptophan-500-mg-l-tryptophan-supplement-for-healthy-sleep)

## 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

- • **Clean, Pure Ingredients:** Non-GMO, gluten-free, and vegetarian capsules crafted for maximum potency and purity.
- • **Stress Response Support:** Promotes a balanced stress response to keep you calm and focused in a fast-paced world.
- • **Trusted Legacy of Quality:** Over 40 years of research-backed formulations made in the USA with rigorous quality control.
- • **Clinically Inspired Dosage:** Formulated with scientifically validated 500 mg per capsule for optimal bioavailability.
- • **Serotonin Boost for Mood & Sleep:** Elevate your mood and unlock deep, natural sleep cycles with essential amino acid support.

## Overview

Life Extension L-Tryptophan 500 mg capsules deliver a potent, pure dose of this essential amino acid to naturally support serotonin production, promoting restful sleep, positive mood, and healthy stress response. Gluten-free, non-GMO, and vegetarian, these capsules are crafted with premium ingredients and backed by over four decades of scientific research, making them a trusted choice for professionals seeking holistic wellness and better nights.

## Description

Serotonin is a neurotransmitter in the brain associated with positive moods and restful sleep. To produce and maintain optimum serotonin levels, your body requires tryptophan, an essential amino acid the body can’t produce. Life extension offers L-Tryptophan capsules to broadly and powerfully support tryptophan levels already within the normal range.

Review: 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: 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 – You’ve probably heard of serotonin. It’s a neurotransmitter that is deeply involved in both restful sleep and positive mood. But what you might not know is that your body needs adequate levels of the essential amino acid tryptophan to make it.
- GET SOME SHUTEYE – Modern lifestyles seem to revolve around not getting enough rest—but that’s not healthy. To keep your body healthy, you have to let it rest. L-Tryptophan encourages serotonin production, which in turn promotes restful, restorative sleep patterns.
- MOOD (AND MUNCHIES) – What else is tryptophan good for? Well, it promotes a healthy mood (that’s the serotonin again) and it also promotes satiety: the sensation of being full. Tryptophan also encourages your body’s healthy response to stress.
- 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. Or formulations are created using the exact ingredients and dosages used in the studies that inspired them, ensuring that maximum bioavailability and efficacy is achieved.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00CC1S2IC |
| ASIN  | B00CC1S2IC |
| Additives | L-Tryptophan |
| Age Range Description | Adult |
| Allergen Information | Gluten Free |
| Best Sellers Rank | #6,096 in Health ( See Top 100 in Health ) #119 in Amino Acid Nutritional Supplements |
| Brand | Life Extension |
| Customer Reviews | 4.5 4.5 out of 5 stars (223) |
| Customer reviews | 4.5 4.5 out of 5 stars (223) |
| Date First Available | 21 June 2013 |
| Format | Capsule |
| Is Discontinued By Manufacturer  | No |
| Item model number  | 01722 |
| Manufacturer  | Life Extension |
| Product Dimensions  | 6.35 x 6.35 x 10.16 cm; 104.33 g |
| Product Name | L-Tryptophan Supplement |
| Serving Recommendation | Take one (1) capsule 1 to 3 times daily |
| Units | 90 Count |
| Weight | 0.2 Kilograms |

## Product Details

- **Brand:** Life Extension
- **Diet type:** Vegetarian
- **Flavour:** Unflavored
- **Item dimensions L x W x H:** 6.4 x 6.4 x 10.2 centimeters
- **Item form:** Capsule
- **Item weight:** 104 g
- **Primary supplement type:** L-Tryptophan
- **Special ingredients:** L-Tryptophan
- **Unit count:** 90 Count

## Images

![L-Tryptophan 500 mg – L-Tryptophan Supplement for Healthy Sleep and Stress Response Support – Gluten-Free, Non-GMO, Vegetarian – 90 Capsules - Image 1](https://m.media-amazon.com/images/I/71gBpCwmjtL.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

### ⭐⭐⭐⭐⭐ Review
*by T***S on 4 April 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!

### ⭐⭐⭐⭐⭐ Review
*by R***Y on 29 August 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.

### ⭐⭐⭐⭐⭐ Review
*by D***S on 14 October 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
- 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 L-Theanine, 100 mg, 60 Vegetarian Capsules — Supports a Calming & Mood Enhancing Effect, Amino Acid Derived From Tea - Gluten-Free, Non-GMO

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-01-22*