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NOW Foods

L-Arginine Powder

Item | NWF891

  • Pure arginine powder



  • Pharmaceutical grade



  • Free form


$22.73
5% OFF
$23.93
Other Sizes Available

Customers Also Viewed

Supplement Facts

Serving Size 2 Level Teaspoons (approx. 6 g)

Servings Per Container about 76

Amount Per Serving   % Daily Value
L-Arginine (Free-Form) 6 g (6,000 mg) *

* Daily Value not established.

Other ingredients: None.

SUGGESTED USAGE: Take 2 level teaspoons daily as needed in juice or water, preferably on an empty stomach.

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.

Natural color variation may occur in this product.

This product is sold by weight not volume.

Store in a cool, dry, dark place after opening.

  • Not manufactured with yeast, wheat, gluten, soy, corn, milk, egg, fish, shellfish or tree nut ingredients.
  • Produced in a GMP facility that processes other ingredients containing these allergens.
  • NOW┬« L-Arginine is Pharmaceutical Grade.
  • Pure, Free-Form
  • Non-GMO
  • GMP QUALITY ASSURED
  • Recyclable Bottle.
  • Pure arginine powder



  • Pharmaceutical grade



  • Free form


L-Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion as well as DNA synthesis. NOW Foods L-Arginine Powder is a pharmaceutical grade powder delivering 6 grams free-form L-arginine per serving. 

Terms and Ingredient Definitions

Shipping Weight: 1.22 lbs

Non-GMO

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

MSRP: $39.99

For our website and catalog, the MSRP is the "Manufacturer's Suggested Retail Price." The MSRP is understood to mean the price at which a manufacturer will recommend a retailer sell a product for in stores, on the internet, or in catalogs. The MSRP of National brand items are dictated to Swanson by each manufacturer. For Swanson brand items, the MSRP is calculated based on a varying percentage above the product's base price.

Disclaimer: Product reviews are provided for informational purposes only. The information or opinions expressed therein are solely those of the contributors and do not necessarily represent those of Swanson Health Products and its employees. Please read full product reviews disclaimer.
1-5 of 18 reviews
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Tastes bad but lemon juice makes it tolerable
Yes, it tastes horrible but I wanted to share how I discovered to make taste minimal. I put about 2oz of grape juice and about 1-2 oz of lemon juice. The lemon semi neutralizes the taste. I try to throw it back in 1-2 swallows then rinse and gargle with water. Yeah, its a lot of work but you have to take many capsules to get 1G or more at a time
Quality: 5.0 / 5.0
Value: 5.0 / 5.0
Effectiveness: 4.0 / 5.0
Convenience: 5.0 / 5.0
Satisfaction: 4.0 / 5.0
Helpful?
Terrible taste
I so regret having bought this in powder form instead of a capsule. I wasted my money and space in my kitchen cabinet. The taste is so awful I can't stand it. I don't know if it's effective or good quality ... I'll give everything a one, I wish there was a "na" choice.
Quality: 1.0 / 5.0
Value: 1.0 / 5.0
Effectiveness: 1.0 / 5.0
Convenience: 1.0 / 5.0
Satisfaction: 1.0 / 5.0
Helpful?
I received this product a few weeks ago and tried today for the first time.The taste was horrible.Tried to mix it with juice and it made it worse. I have been ordering from Swanson for a number of years and had never been disappointed. I will keep ordering because of your great products and price.
Quality: 5.0 / 5.0
Value: 5.0 / 5.0
Effectiveness: 4.0 / 5.0
Convenience: 4.0 / 5.0
Satisfaction: 4.0 / 5.0
Helpful?
Quality: 5.0 / 5.0
Value: 5.0 / 5.0
Effectiveness: 5.0 / 5.0
Convenience: 5.0 / 5.0
Satisfaction: 5.0 / 5.0
Helpful?
Taste is nasty!
I read the reviews and thought surely i can take this stuff. The large L-Arginine 1000 mg pills are so huge they either get stuck half way down or I can feel it for a long time after. I thought the powder would be handy but have not figured out a way to disguise the taste yet. The smell is very nasty and the taste is also pretty bad. I do hope i can figure something out to be able to use it.
Quality: 3.0 / 5.0
Value: 3.0 / 5.0
Effectiveness: 3.0 / 5.0
Convenience: 4.0 / 5.0
Satisfaction: 1.0 / 5.0
Helpful?

Swanson Health started in 1969 in Fargo, ND with a mission to offer pure and potent health products at a great value. Over 50 years later, we continue to innovate science-backed vitamins and supplements, delivering wellness solutions that help people live simply healthier together, and find vitality at any age. Click here to learn more about us.

For over 50 years, Swanson Health's research and development team has delivered science-backed health and wellness products to people around the world. Our innovation is guided by clinical research, scientific consensus, emerging research and usage traditions, creating products that help you find vitality at any age. At Swanson, we don't hide our science behind proprietary formulas — we believe in easy-to-read, transparent labelling. What's printed on our labels, is exactly what you'll find in our products.

Swanson Health's purity and potency testing begins with our ingredient sourcing, continues through manufacturing, and goes beyond when a product hits the shelf. Our testing exceeds industry standards, ensuring each product meets our quality guarantees for purity and potency. Swanson facilities are Good Manufacturing Practices (GMP) certified, and we voluntarily participate in third-party, independent laboratory testing. With Swanson, you can be sure you're getting the most pure and potent health products at a great value. Click here to learn more about our quality standards.

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