---
product_id: 5400500
title: "Sports Nutrition, L- Ornithine Powder, Protein Metabolism* and Urea Detox*, Amino Acids, 8-Ounce"
brand: "now foods"
price: "$49.27"
currency: USD
in_stock: true
reviews_count: 13
category: "Now Foods"
url: https://www.desertcart.us/products/5400500-sports-nutrition-l-ornithine-powder-protein-metabolism-and-urea-detox
store_origin: US
region: United States of America
---

# Supports muscular energy via creatine conversion GMP A-rated purity & potency tested Central role in urea cycle detoxification Sports Nutrition, L- Ornithine Powder, Protein Metabolism* and Urea Detox*, Amino Acids, 8-Ounce

**Brand:** now foods
**Price:** $49.27
**Availability:** ✅ In Stock

## Summary

> 💪 Elevate your muscle game with pure, pro-grade L-Ornithine power!

## Quick Answers

- **What is this?** Sports Nutrition, L- Ornithine Powder, Protein Metabolism* and Urea Detox*, Amino Acids, 8-Ounce by now foods
- **How much does it cost?** $49.27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/5400500-sports-nutrition-l-ornithine-powder-protein-metabolism-and-urea-detox)

## Best For

- now foods enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Legacy:** Family-owned USA brand since 1968 delivering consistent, vegan-friendly performance
- • **Detox Like a Pro:** Enhances urea cycle to efficiently clear ammonia, supporting protein metabolism ♻️
- • **Clean & Certified:** GMP A-rated quality assurance means pure, lab-tested amino acid power 🧪
- • **Power Your Recovery:** Boosts muscle energy by converting into creatine for next-level workouts ⚡
- • **Versatile Amino Acid:** Transforms into arginine, citrulline, proline & glutamate to fuel multiple body functions

## Overview

NOW Foods L-Ornithine Powder is a vegan, unflavored amino acid supplement designed to support protein metabolism and muscular energy by aiding the urea cycle and converting into key amino acids and creatine. GMP A-rated and family-made in the USA, it offers 227 servings of pure, lab-tested powder to optimize recovery, detox, and muscle growth for active adults.

## Description

Ornithine is a non-essential amino acid that plays a central role in the urea cycle, functioning along with arginine and citrulline to rid the body of ammonia, a by-product of protein metabolism.* Because ornithine is converted into arginine, it can help to maintain healthy arginine levels in the body.* Ornithine can also be converted into other amino acids, such as citrulline, proline, and glutamate, as well as creatine, an important muscular energy source.* This product is pure, and because no anti-caking agents are used, lumping may occur. This product contains hydrochloride, the acid normally present in the stomach, which acts to stabilize the L-ornithine. Natural color variation may occur in this product.

Review: a miracle for HGH when 25mg taken at bedtime with 500mg ALCAR - Check google scholar you will see the study on this. It really makes me feel so strong the next day. Careful, too much ornithine boosts HGH too much so reduce dose if you are not getting 8hrs sleep. The ALCAR requires choline to work so get some citicoline.
Review: Great If You're on a Parasite Protocol - My nutritionist recommended L-Ornithine to reduce my night-time sweating while taking anti-parasite herbs. I couldn't believe how well it worked! Her brand was super expensive, though, and this product by NOW worked just as well. I took just under a Tbsp to stay comfortable at night.

## Features

- NOW Sports products are comprehensively tested so you can trust that our products are pure and effective for every level of athletics
- NON-ESSENTIAL AMINO ACID: Ornithine is a non-essential amino acid that plays a central role in the urea cycle, functioning along with arginine and citrulline to rid the body of ammonia, a by-product of protein metabolism*
- IMPORTANT MUSCULAR ENERGY SOURCE*: Because ornithine is converted into arginine, it can help to maintain healthy arginine levels in the body.* Ornithine can also be converted into other amino acids, such as citrulline, proline, and glutamate, as well as creatine, an important muscular energy source
- GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation)
- Packaged in the USA by a family owned and operated company since 1968

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0013OUQA6 |
| ASIN  | B0013OUQA6 |
| Age Range Description | Adult |
| Best Sellers Rank | #213,871 in Health & Household ( See Top 100 in Health & Household ) #212 in L-Arginine Nutritional Supplements |
| Brand Name | NOW Foods |
| Color | White |
| Container Type | Bottle |
| Customer Reviews | 4.6 4.6 out of 5 stars (102) |
| Date First Available  | April 28, 2004 |
| Department  | Health and Beauty>Health and Wellness |
| Diet Type | Vegan |
| Dosage Form | Powder |
| Flavor | Unflavored |
| Global Trade Identification Number | 00733739002501 |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions | 3.15 x 3.15 x 6.25 inches |
| Item Form | Powder |
| Item Weight | 10.48 ounces |
| Item model number  | 0250 |
| Manufacturer | NOW Sports - Nutrition and Wellness |
| Manufacturer  | NOW Sports - Nutrition and Wellness |
| Manufacturer Part Number | 0250 |
| Material Features | Vegetarian |
| Model Name | NOW Sports Nutrition, L- Ornithine Powder, Protein Metabolism* and Urea Detox*, Amino Acids, 8-Ounce |
| Model Number | 0250 |
| Number of Items | 1 |
| Primary Supplement Type | Creatine |
| Product Benefits | Detoxing, Muscle Growth |
| Product Dimensions  | 3.15 x 3.15 x 6.25 inches; 10.48 ounces |
| Special Ingredients | Amino Acid |
| Total Servings Per Container | 227 |
| UPC | 733739002501 |
| Unit Count | 8.0 Ounce |

## Product Details

- **Brand:** NOW Foods
- **Diet Type:** Vegan
- **Flavor:** Unflavored
- **Item Form:** Powder
- **Item Weight:** 10.48 ounces
- **Item dimensions L x W x H:** 3.15 x 3.15 x 6.25 inches
- **Primary Supplement Type:** Creatine
- **Product Benefits:** Detoxing, Muscle Growth
- **Special Ingredients:** Amino Acid
- **Unit Count:** 8.0 Ounce

## Images

![Sports Nutrition, L- Ornithine Powder, Protein Metabolism* and Urea Detox*, Amino Acids, 8-Ounce - Image 1](https://m.media-amazon.com/images/I/7179OoTU1lL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ a miracle for HGH when 25mg taken at bedtime with 500mg ALCAR
*by J***M on August 31, 2022*

Check google scholar you will see the study on this. It really makes me feel so strong the next day. Careful, too much ornithine boosts HGH too much so reduce dose if you are not getting 8hrs sleep. The ALCAR requires choline to work so get some citicoline.

### ⭐⭐⭐⭐⭐ Great If You're on a Parasite Protocol
*by J***A on July 16, 2017*

My nutritionist recommended L-Ornithine to reduce my night-time sweating while taking anti-parasite herbs. I couldn't believe how well it worked! Her brand was super expensive, though, and this product by NOW worked just as well. I took just under a Tbsp to stay comfortable at night.

### ⭐⭐⭐⭐⭐ Unlocking Deep Recovery and Metabolic Efficiency with a Versatile Amino Powerhouse
*by P***H on November 24, 2025*

I have been experimenting with amino acid stacks for years to optimize my post-workout recovery and overall sleep architecture, and adding this L-Ornithine powder to my regimen has been a distinct game-changer. My primary motivation for picking this up was the promise of efficient urea detoxification. As someone who consumes a high-protein diet to support muscle growth, I am acutely aware of the metabolic load that places on the body, specifically the buildup of ammonia which can lead to fatigue ("meat sweats," anyone?). Since incorporating this powder, I have noticed a tangible difference in how "clean" I feel after heavy lifting sessions. It acts effectively as metabolic housekeeping, helping to flush out the byproducts of protein breakdown so that my body can focus on rebuilding tissue rather than just fighting off fatigue. The versatility of the powder format is something I genuinely appreciate over capsules. This tub offers immense value because a little goes a very long way, and I have complete control over the dosage. I typically take about half a teaspoon mixed into water or juice. I must admit, L-Ornithine does not have the most pleasant flavor profile on its own—it is not exactly bitter, but it has a distinct, somewhat savory chemical taste that isn't great solo. However, because this NOW Foods formulation is micronized so well, it dissolves almost instantly. I found that mixing it with a tart cherry juice or a flavored electrolyte drink completely masks the taste, making it a non-issue. The texture is fine and doesn't leave that gritty residue at the bottom of the shaker cup that lesser brands often do. Beyond the detox aspect, the most surprising and enjoyable benefit I have experienced is the impact on my sleep quality. I take this about 30 minutes before bed, often stacked with L-Arginine, and the result is a profound sense of relaxation without the drowsiness associated with melatonin or sedatives. It seems to lower my cortisol levels and quiet the physical restlessness that comes from a hard day of training. I wake up feeling genuinely refreshed and ready to attack the gym again, rather than groggy. This specific tub has lasted me months, and given the purity and lack of fillers—no mystery ingredients, just straight amino acid—it is easily one of the most cost-effective staples in my supplement cabinet for maintaining high-level performance and recovery.

## Frequently Bought Together

- NOW Foods Sports Nutrition, L- Ornithine Powder, Protein Metabolism* and Urea Detox*, Amino Acids, 8-Ounce
- NOW Sports Nutrition, L-Arginine Powder, Nitric Oxide Precursor, Amino Acids, 1-Pound
- NOW Foods Sports Nutrition, L-Glutamine Pure Powder, Nitrogen Transporter*, Amino Acid, 1-Pound

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-15*