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Now Foods, L-Arginine, 500 mg, 250 Capsules

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In Stock
  • Expiration Date: Jul 2019
  • Shipping Weight: 0.53 lbs (0.24 kg)
  • Product Code: NOW-00031
  • UPC Code: 733739000316
  • Package Quantity: 250 Capsules
  • Dimensions: 5.3 x 3 x 3 in, 0.45 lbs (0.2 kg)
Product Overview


  • Non-GMO
  • A Dietary Supplement
  • Amino Acids
  • Family Owned Since 1968
  • GMP Quality Assured

Amino Acid

  • Conditionally Essential Amino Acid
  • Nitric Oxide Precursor

L-Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion, as well as 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.

Suggested Use

Take 2 capsules twice daily as needed. Take between meals or at bedtime with a carbohydrate drink to facilitate absorption.

Other Ingredients

Gelatin (capsule), magnesium stearate (vegetable source) and silica.

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

The L-Arginine used in this product is Pharmaceutical Grade.

Natural color variation may occur in this product.


Store in a cool, dry place after opening.

Please recycle.

Caution: For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition. This supplement should be avoided by persons with glaucoma or herpes simplex unless otherwise prescribed by a physician. Do not use if you have had a myocardial infarction or have established coronary artery disease. Keep out of reach of children.

Supplement Facts
Serving Size: 2 Capsules
Servings Per Container: 125
  Amount Per Serving % Daily Value
L-Arginine (Free-Form) 1 g (1,000 mg) *
* Daily Value not established.
iHerb Customer Reviews


Posted by Reviewer2526915 on Jan 02, 2017

Even though I have taken this product just for 2 weeks, there is big difference.

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The Best Arginine!

Posted by Reviewer2250691 on Dec 25, 2016

This Arginine Is The Best And Works Within 10-15 Minutes. I Tried A Cheaper Brand To Save $$$ Which Had No Effect What So Ever. This Is The Best. G From Melbourne

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Posted by 5339003388769662013 on Dec 05, 2016

Product received with success - demorou dois meses mas chegou!

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Posted by 5680555220792365070 on Oct 25, 2016

thanks alot for that product

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good for bladder

Posted by 4793885060379824038 on Aug 01, 2016

I have had chronic bladder problems and L-Arginine seems to settle things very well. I had read about it being good to heal bladders so thought I would give it a try. I am glad I did.

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