---
product_id: 5583256
title: "Supplements, L-Arginine 500 mg, Nitric Oxide Precursor*, Amino Acid, 100 Veg Capsules"
brand: "now foods"
price: "€ 10.88"
currency: EUR
in_stock: true
reviews_count: 8
category: "Now Foods"
url: https://www.desertcart.ie/products/5583256-supplements-l-arginine-500-mg-nitric-oxide-precursor-amino-acid
store_origin: IE
region: Ireland
---

# 500 mg pure L-Arginine per capsule Supports DNA synthesis & protein production Boosts nitric oxide for enhanced blood flow Supplements, L-Arginine 500 mg, Nitric Oxide Precursor*, Amino Acid, 100 Veg Capsules

**Brand:** now foods
**Price:** € 10.88
**Availability:** ✅ In Stock

## Summary

> 💥 Elevate your health game with NOW L-Arginine — the secret to unstoppable energy and flow!

## Quick Answers

- **What is this?** Supplements, L-Arginine 500 mg, Nitric Oxide Precursor*, Amino Acid, 100 Veg Capsules by now foods
- **How much does it cost?** € 10.88 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/5583256-supplements-l-arginine-500-mg-nitric-oxide-precursor-amino-acid)

## 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

- • **Nitric Oxide Powerhouse:** Unlock superior circulation and vascular health with every dose
- • **Clean & Certified Quality:** Non-GMO, Kosher, soy-free, and GMP A-rated for peace of mind
- • **Versatile Wellness Booster:** Supports muscle growth, immune function, and faster recovery
- • **Plant-Based & Allergy-Friendly:** 100% vegetarian capsules free from common allergens
- • **Precision-Packed 500 mg Capsules:** Consistent, pharmaceutical-grade dosage for daily vitality

## Overview

NOW Foods L-Arginine delivers 500 mg of a conditionally essential amino acid per vegetarian capsule, acting as a potent nitric oxide precursor to enhance blood vessel dilation and cardiovascular health. Manufactured in the USA under strict GMP-certified processes, this non-GMO, kosher, and allergen-free supplement supports DNA synthesis, protein production, muscle growth, and immune function, making it a versatile addition to any wellness routine.

## Description

Product Description NOW L-Arginine comes in 500 mg capsules and is non-GMO. Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion, as well as in DNA synthesis and protein production.* It is an important precursor of nitric oxide (NO) and thus plays a role in the dilation of blood vessels.* The L-Arginine used in this product is pharmaceutical grade. Natural color variation may occur in this product. Brand Story By NOW Foods

Review: NOW Supplements L-Arginine - A Game-Changer for My Health! - I recently added NOW Supplements L-Arginine to my daily routine, and the impact it has had on my health has been nothing short of remarkable. This amino acid supplement has quickly become a must-have, and I'm excited to share my 5-star review. Nitric Oxide Support: The standout feature of NOW Supplements L-Arginine is its role as a nitric oxide precursor. Nitric oxide plays a crucial role in promoting healthy circulation and blood flow. Since incorporating this supplement, I've noticed improved vascular function and overall cardiovascular health. Versatile Amino Acid: L-Arginine is a versatile amino acid that offers a wide range of benefits. Not only does it support heart health, but it also plays a role in immune function, hormone secretion, and wound healing. It's like a multitasking hero for overall well-being. Quality Assurance: NOW Supplements is a brand known for its commitment to quality, and this product is no exception. The veg capsules are convenient to take and are free from common allergens, ensuring a pure and reliable supplement. Convenient Dosage: Each 500 mg veg capsule provides a convenient and precise dosage. It's easy to incorporate into my daily supplement routine, allowing me to experience the benefits effortlessly. Improved Energy: Since taking L-Arginine, I've noticed increased energy levels and improved stamina during physical activities. It has become an essential part of my pre-workout routine, helping me maximize my workouts. Enhanced Recovery: L-Arginine's role in promoting healthy blood flow contributes to quicker post-workout recovery. It helps reduce muscle soreness and fatigue, allowing me to bounce back faster. Immune Support: This supplement also provides immune support, which is particularly important in today's world. A strong immune system is crucial for overall health and well-being, and L-Arginine plays a part in supporting immune function. NOW Supplements L-Arginine is a game-changer for anyone looking to improve their overall health and well-being. Its nitric oxide support, versatile benefits, quality assurance, and convenient dosage make it a top-tier choice for those who value their health. It has undoubtedly earned its 5-star rating and my wholehearted recommendation. If you're seeking an amino acid supplement that offers a wide range of benefits, look no further. NOW Supplements L-Arginine is a true health booster that I can't imagine my daily routine without. Give it a try, and experience the difference it can make for your health!
Review: Good quality at a good price - Good quality at a good price

## Features

- CONDITIONALLY ESSENTIAL AMINO ACID: Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion, as well as in DNA synthesis and protein production*
- NITRIC OXIDE PRECURSOR*: Arginine plays an important role in the dilation of blood vessels*
- CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, Kosher, Soy Free
- GMP Quality Assured: A-rated, third-party certification means that every aspect of the NOW manufacturing process has been examined. Our in-house laboratories are ISO/IEC accredited for laboratory testing including for stability, potency and product formulation.
- Packaged in the USA by a family owned and operated company since 1968

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000J6DYJO |
| Age Range Description | Adult |
| Best Sellers Rank | #13,091 in Health & Household ( See Top 100 in Health & Household ) #12 in L-Arginine Nutritional Supplements #1,278 in Sales & Deals |
| Brand | NOW Foods |
| Brand Name | NOW Foods |
| Color | White |
| Container Type | Bottle |
| Customer Reviews | 4.6 out of 5 stars 7,144 Reviews |
| Diet Type | Kosher |
| Dosage Form | Capsule |
| Flavor | Unflavored |
| Global Trade Identification Number | 00733739000309 |
| Item Dimensions | 2.25 x 2.25 x 4.38 inches |
| Item Form | Capsule |
| Item dimensions L x W x H | 2.25 x 2.25 x 4.38 inches |
| Manufacturer | NOW Sports - Nutrition and Wellness |
| Material Features | Vegetarian |
| Material Type Free | wheat, gluten, soy, milk, egg, fish, shellfish, tree nut |
| Model Name | L-Arginine 500 mg, Nitric Oxide Precursor |
| Number of Items | 1 |
| Pill Coating | Hypromellose |
| Primary Supplement Type | protein |
| Product Benefits | Muscle Growth |
| Special Ingredients | L-Arginine |
| Specific Uses For Product | Nitric Oxide Precursor, Urea Metabolism, DNA Synthesis, Protein Production |
| Supplement Formulation | Individual Supplement |
| Total Servings Per Container | 50 |
| UPC | 733739000309 |
| Unit Count | 100 Count |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** NOW Foods
- **Diet Type:** Kosher
- **Flavor:** Unflavored
- **Item Form:** Capsule
- **Item dimensions L x W x H:** 2.25 x 2.25 x 4.38 inches
- **Primary Supplement Type:** protein
- **Product Benefits:** Muscle Growth
- **Special Ingredients:** L-Arginine
- **Unit Count:** 100 Count

## Images

![Supplements, L-Arginine 500 mg, Nitric Oxide Precursor*, Amino Acid, 100 Veg Capsules - Image 1](https://m.media-amazon.com/images/I/71UpqEZSCQL.jpg)

## Available Options

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

## Questions & Answers

**Q: will this product replace calis for erectile dysfunctiol ?**
A: Be careful. My blood-pressure dropped considerably. If you are currently taking any blood pressure lowering pills then you may want to consider consulting your doctor prior to self dosing with this supplement.

**Q: Is this a herb medicine ? i mean is it made out of natural stuff ?**
A: L Arginine is an Amino Acid.  See belowArginine is a conditionally essential amino acid, meaning that whether or not it is required to be healthy is conditional on the health status or life cycle of the individual. The biosynthetic pathway, however, does not produce sufficient arginine, and some must still be consumed through diet.citation neededIndividuals with poor nutrition or certain physical conditions may be advised to increase their intake of foods containing arginine. Arginine is found in a wide variety of foods, including:Animal sourcesdairy products (e.g., cottage cheese, ricotta, milk, yogurt, whey protein drinks), beef, pork (e.g., bacon, ham), gelatin, poultry (e.g. chicken and turkey light meat), wild game (e.g. pheasant, quail), seafood (e.g., halibut, lobster, salmon, shrimp, snails, tuna)Plant sourceswheat germ and flour, lupins, buckwheat, granola, oatmeal, peanuts, nuts (coconut, pecans, cashews, walnuts, almonds, Brazil nuts, hazelnuts, pinenuts), seeds (pumpkin, sesame, sunflower), chickpeas, cooked soybeans, Phalaris canariensis (canaryseed or alpiste)

**Q: How large are the capsules? Are they easy to swallow?**
A: It is a tubular shaped capsule, approximately 7/8" long by 1/4" diameter.  Very smooth and I find swallowing it to be simple.  I typically swallow two at a time.  However, I generally don't have a problem swallowing pills.

**Q: I was taking this supplement as suggested:2 capsules twice a day between meals.
Any idea if taking with meal it will work the same?**
A: You should direct this question to :
nowfoods.com
They should best know how to direct you on their product. Thanks for asking!

## Customer Reviews

### ⭐⭐⭐⭐⭐ NOW Supplements L-Arginine - A Game-Changer for My Health!
*by A***X on October 31, 2023*

I recently added NOW Supplements L-Arginine to my daily routine, and the impact it has had on my health has been nothing short of remarkable. This amino acid supplement has quickly become a must-have, and I'm excited to share my 5-star review. Nitric Oxide Support: The standout feature of NOW Supplements L-Arginine is its role as a nitric oxide precursor. Nitric oxide plays a crucial role in promoting healthy circulation and blood flow. Since incorporating this supplement, I've noticed improved vascular function and overall cardiovascular health. Versatile Amino Acid: L-Arginine is a versatile amino acid that offers a wide range of benefits. Not only does it support heart health, but it also plays a role in immune function, hormone secretion, and wound healing. It's like a multitasking hero for overall well-being. Quality Assurance: NOW Supplements is a brand known for its commitment to quality, and this product is no exception. The veg capsules are convenient to take and are free from common allergens, ensuring a pure and reliable supplement. Convenient Dosage: Each 500 mg veg capsule provides a convenient and precise dosage. It's easy to incorporate into my daily supplement routine, allowing me to experience the benefits effortlessly. Improved Energy: Since taking L-Arginine, I've noticed increased energy levels and improved stamina during physical activities. It has become an essential part of my pre-workout routine, helping me maximize my workouts. Enhanced Recovery: L-Arginine's role in promoting healthy blood flow contributes to quicker post-workout recovery. It helps reduce muscle soreness and fatigue, allowing me to bounce back faster. Immune Support: This supplement also provides immune support, which is particularly important in today's world. A strong immune system is crucial for overall health and well-being, and L-Arginine plays a part in supporting immune function. NOW Supplements L-Arginine is a game-changer for anyone looking to improve their overall health and well-being. Its nitric oxide support, versatile benefits, quality assurance, and convenient dosage make it a top-tier choice for those who value their health. It has undoubtedly earned its 5-star rating and my wholehearted recommendation. If you're seeking an amino acid supplement that offers a wide range of benefits, look no further. NOW Supplements L-Arginine is a true health booster that I can't imagine my daily routine without. Give it a try, and experience the difference it can make for your health!

### ⭐⭐⭐⭐⭐ Good quality at a good price
*by D***Y on December 14, 2025*

Good quality at a good price

### ⭐⭐⭐⭐⭐ Boost Your Workout Performance with Now Supplements L-Arginine
*by D***L on March 19, 2024*

In my ongoing quest for fitness, I recently added Now Supplements L-Arginine to my regimen, and the results have been nothing short of impressive. This supplement, known for its role as a precursor for nitric oxide, has proven to be a game-changer in enhancing my workout stamina and performance. The science behind L-Arginine is compelling. As a precursor for nitric oxide, it promotes endurance and conditioning by expanding blood vessels and increasing blood flow to the muscles during exercise. This not only leads to lowered blood pressure but also ensures that muscles receive the oxygen and nutrients they need to perform at their best. Since incorporating Now Supplements L-Arginine into my routine, I've noticed a significant improvement in my cardio endurance and a reduction in fatigue during weight training sessions. The capsules are easy to take and have quickly become a staple in my pre-workout routine. Overall, I'm thoroughly impressed with the efficacy of Now Supplements L-Arginine. It's a powerful tool for anyone looking to optimize their workout performance and push past their fitness goals. If you're serious about achieving peak performance in the gym, I highly recommend giving this supplement a try.

## Frequently Bought Together

- NOW Foods Supplements, L-Arginine 500 mg, Nitric Oxide Precursor*, Amino Acid, 100 Veg Capsules
- NOW Foods Supplements, L-Glutamine 500 mg, Nitrogen Transporter*, Amino Acid, 120 Veg Capsules
- NOW Foods Supplements, L-Carnitine 500mg, Purest Form, Amino Acid, Fitness Support*, 60 Veg Capsules

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-24*