header_search header_signed-out header_signed-in header_cart sharefilled circlex
Added to Cart
Cart Total:
Customers Also Bought:
24/7 Help

Doctor's Best, L-Arginine, 500 mg, 120 Bilayer Tablets

$15.00 $15.00 (Saved $14.99)

Thank you!

Your email is being processed.

Doctor's Best, L-Arginine, 500 mg, 120 Bilayer Tablets

Click to zoom
Our Price:
$0.13/Bilayer Tablets
You Save:
$14.99 (50)
Quantity Discount:
Buy 3+
(5% off)

Sorry, this product is no longer in stock.

Earn 5% Loyalty Credit ?
Combo Discount

Sorry, this product is no longer in stock.

Doctor's Best, L-Arginine, 500 mg, 120 Bilayer Tablets

In Stock
  • Expiration Date: September 2019
  • Shipping Weight:
    0.47 lbs
    Switch to Metric units
  • Product Code: DRB-00200
  • UPC Code: 753950002005
  • Package Quantity: 120 Bilayer Tablets
  • Dimensions:
    2.3 x 2.3 x 4.2 in, 0.4 lbs
    Switch to Metric units

Product Rank:

#13 in L Arginine >
Frequently Purchased Together
Product Overview


  • Ortho┬╣
  • Science Based Nutrition
  • Dietary Supplement
  • Sustained Plus Immediate Release
  • Promotes a Healthy Cardiovascular System
  • Enhances Healthy Circulation
  • Supports Heart Function
  • Vegan
  • Non-GMO and Gluten Free

Sustained plus Immediate Release L-Arginine contains this conditionally essential amino acid in a bilayer tablet, with two tablets providing 500 mg of sustained release and 500 mg of immediate release L-arginine in a formula that allows for enhanced blood levels of this nutrient. Most supplemental L-arginine is quickly absorbed into circulation and is extremely efficiently metabolized, yielding only a short-lived boost to L-arginine levels. Sustained plus Immediate Release L-Arginine tablets are specifically manufactured to immediately increase blood levels of L-arginine and then to sustain this beneficial increase continuously over an 8-hour period.

L-arginine has been shown to support the cardiovascular system, promote vigorous heart function and enhance healthy circulation throughout the body through its conversion to nitric oxide. Research suggests L-arginine supplementation may also have positive benefits on athletic performance.

Suggested Use

Adult Use: Take 2 tablets once or twice daily, away from food, or as directed by a nutritionally informed physician.

Other Ingredients

Celluloses, stearic acid, silicon dioxide, magnesium stearate (vegetable source), croscarmellose sodium.

Contains nothing other than listed ingredients


While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
Supplement Facts
Serving Size: 2 tablets
Servings Per Container: 60 servings
  Amount per serving % Daily Value
L-Arginine (as 500 mg immediate release and 500 mg sustained release from L-Arginine alpha-Keto-Glutarate) 1000 mg
† Daily Value not established.
iHerb Customer Reviews

Causing shingles

Posted by iHerb Customer on March 16 2018 | Verified Purchase

Be careful this product causing shingles.I used this product for 3 weeks twice a day. I developed a red rash on my back. When my doctor checked it he said that I have shingles and it was triggered by l-arginine pills. Usually only old people have shingles and I'm 30 years old healthy guy, I took L-arginine to improve my everyday workout.And now I'm sick because of this product.

Thanks for your feedback!


Posted by iHerb Customer on December 15 2017 | Verified Purchase

good,fast dilivery

Thanks for your feedback!

Good product

Posted by iHerb Customer on November 3 2017 | Verified Purchase

Recommendation for sexy and mental health

Thanks for your feedback!

Very Good

Posted by iHerb Customer on August 19 2017 | Verified Purchase

Capsules were a little on the large size but are very effective

Thanks for your feedback!

it works extremly well

Posted by iHerb Customer on June 17 2017 | Verified Purchase

my blood pressure went down and I stopped taking the medication the doctor prescribed for me as it was giving me many side effects.

Thanks for your feedback!