100% Customer Satisfaction Guarantee

America's #1 Rated Catalog/Internet Merchant
Based on Customer Satisfaction

Swanson Premium


Swanson $3.99
Retail $7.49
Save 47%
Add To Order
Add to Favorites

Recently Viewed Items

Look here for an easy way to
navigate to your previously
viewed products.

In Stock
Caps Size:
O, Pill Size Guide
500 mg 100 Caps
Other Sizes:

"I read that this supplement may help circulation so I tried it. I've been using it for a year now and do feel it is working! I trust the Swanson brand and price." ~ product review by pb59

  • Valuable, free-form amino acid nutrition

  • Provides fundamental nourishment for immune and cardiovascular systems

  • Teams with methionine and glycine to aid the making of energy in your muscles

Swanson L-Arginine is an economical and effective addition to your dietary plan, especially if you are concerned with cardiovascular and immune system health. Each convenient capsule delivers 500 mg of free-form l-arginine.

Product Label

Supplement Facts

Serving Size 1 Capsule

  Amount Per Serving % Daily Value
L-Arginine (free-form amino acid) 500 mg *

*Daily Value not established.

Other ingredients: Gelatin, may contain one or more of the following: microcrystalline cellulose (plant fiber), magnesium stearate, silica.

Suggested Use: As a dietary supplement, take one capsule one to two times per day with water.

WARNING: Not intended for use by children or pregnant women. Consult your healthcare provider before use if you have renal or liver disease. Reduce dosage if you experience nausea, abdominal cramps or diarrhea.

Terms and Ingredient Definitions

Swanson Premium L-Arginine Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

L-Arginine 4.3 5 8 10
Satisfactory purchase I've been using Swanson products for over a year and the combination, which includes L-Arginine as well as numerous other Swanson products appear to be providing the benefit of improved stamina and wellness. December 4, 2013
Helpful supplement, trusted brand I read that this supplement may help circulation so I tried it. I've been using it for a year now and do feel it is working! I trust the Swanson brand and price. August 2, 2013
Amino Acids I take L-Arginine with L Lysine and Acetyl L Carnitine every evening for the Amino Acids along with Ashwagandha to relax with. July 24, 2013
I think it is working Not saying why I bought it, but I believe with the combination of a couple of others it is doing what I wanted it to. April 17, 2013
Heart and circulation I use this as a part of a heart and circulation regimen. March 30, 2013
Swanson L-Arginine I take this amino to help with blood flow, and it seems to work great! I used to get this one at Walmart when I went there, but it is of course cheaper here. November 18, 2011
Improves my circulation It helps in a 'certain' area if you catch my drift. I take it on an empty stomach. May 29, 2011
Not effective I am aware of all the supposed improved benefits, bioavailability of this product over L-Arginine but this has no effect with me. Am going back to arginine. September 2, 2010
1-9 of 9

7 Leaf Guarantee

Swanson’s 7-Leaf Guarantee

Earning your trust is our first
and only priority.

Top of Page