---
product_id: 80756924
title: "NuSci Pure L-Tryptophan Powder Sleep Aid Complies with USP Quality Standard (1000 Grams (2.2 lb))"
brand: "nusci"
price: "€ 247.42"
currency: EUR
in_stock: true
category: "Hpc"
url: https://www.desertcart.com.cy/products/80756924-nusci-pure-l-tryptophan-powder-sleep-aid-complies-with-usp
store_origin: CY
region: Cyprus
---

# NuSci Pure L-Tryptophan Powder Sleep Aid Complies with USP Quality Standard (1000 Grams (2.2 lb))

**Brand:** nusci
**Price:** € 247.42
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** NuSci Pure L-Tryptophan Powder Sleep Aid Complies with USP Quality Standard (1000 Grams (2.2 lb)) by nusci
- **How much does it cost?** € 247.42 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/80756924-nusci-pure-l-tryptophan-powder-sleep-aid-complies-with-usp)

## Best For

- nusci enthusiasts

## Why This Product

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

## Description

Size:1000 grams (2.2 lb)
            
          
          
        
      
    
  


        
        
     
	       
     

     
                              
     
       	       
        
         
        
        	
        	
        		
        			L-Tryptophan is an essential amino acid. L-Tryptophan is metabolized by enzymes to form the intermediate amino acid 5-HTP (5-hydroxytryptophan) and then serotonin. L-tryptophan is also the metabolic precursor to melatonin and to the B vitamin niacin (B3). Both serotonin and melatonin are important to regulate mood and stress. Serotonin plays important roles in the body for sleep, mood, appetite, muscle contraction, and some cognitive functions including memory and learning. Though there are many dietary sources of serotonin, unlike its precursors L-tryptophan and 5HTP, serotonin does not cross blood-brain barrier, which means that ingesting serotonin in the diet has no effect on brain serotonin levels. As proven by many studies, L-tryptophan is a potent nutrient to enhance restful and peaceful sleep, and also to effectively provide a remedy for occasional sleepless. There is not feeling of next-day drowsiness to take L-tryptophan. The body requires adequate sleep to regenerate and repair essential body functions and allow us to feel refreshed. Sleeping well is a necessity for maintain proper health. Generally Suggested Use: For adult, to take flat 1/2 teaspoon (0.5g) powder 1 to 2 times daily with water or juice on an empty stomach, or as directed by your physician. For sleep aid, best used before bedtime. Or, for your formulation, R&D, and your other use purpose.

## Features

- Pure L-Tryptophan Powder Sleep Aid Complies with USP (US Pharmacopeia) Quality Standard.
- NuSci Brand. There is not any additive or filler inside.
- White to yellowish crystalline powder. Very slightly bitter taste. Slightly soluble in water, mixable in cold water. Store in cool and dry place, keep away from strong light and heat.
- Bulk amino acid pure ingredient powder being good for direct consumption, formulation, tableting, capsulation, R&D (research and development), or other proper purpose.
- Fresh, there are 1 to 1.5 years shelflife availalbe.

## Images

![NuSci Pure L-Tryptophan Powder Sleep Aid Complies with USP Quality Standard (1000 Grams (2.2 lb)) - Image 1](https://images-na.ssl-images-amazon.com/images/I/41TJ6cbg8iL.jpg)
![NuSci Pure L-Tryptophan Powder Sleep Aid Complies with USP Quality Standard (1000 Grams (2.2 lb)) - Image 2](https://images-na.ssl-images-amazon.com/images/I/51iMmOE3cFL.jpg)
![NuSci Pure L-Tryptophan Powder Sleep Aid Complies with USP Quality Standard (1000 Grams (2.2 lb)) - Image 3](https://images-na.ssl-images-amazon.com/images/I/41Uydjf5lKL.jpg)

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-02-12*