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

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In Stock
  • Expiration Date: Dec 2017
  • Shipping Weight: 0.47 lbs (0.21 kg)
  • 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 (0.18 kg)
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Save $4.00 when you purchase these items today for only $19.00
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Combo Discount: - $4.00
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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

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

Very good

Posted by 4669693988845461808 on May 14, 2016

I have thyroid-adrenal issues and don't have enough energy for everyday life. This L-Arginine surprisingly gives me more energy and clearer thinking. Increases libido. No adverse reactions noticed.

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High Blood Pressure

Posted by 5720508950197905733 on Oct 02, 2014

I have had HBP for about five years with no help from Cardiologist so I started taking L-Arginine along with L-Citrulline and it helps control my BP Immensely. The best thing about these non drug tablets is that there are no side effects and I feel much better taking them. iHerb give me a quick delivery to Australia, they are efficient and the prices are very reasonable.I have been trying a lot of natural products to help my BP so read my report about Bergin whole raw Almonds. A natural product like this has also made a tremendous difference to my Bp and I can highly recommend them to anyone suffering with high BP

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Posted by Reviewer3041119 on Dec 10, 2013

I like Dr best products. This one seems to make my face flush and makes me feel agitated. Sure it's a great product just not for me. I also take meds for hypothyroidism.

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What a bonus!

Posted by BrendaRoss on Apr 22, 2013

I bought this product to control my blood pressure. The effect is immediate. My BP went from 160/100 to 125/82 the first day I started this product. However, there is one really important thing to remember: you have to take it without food, otherwise, it won't work. Besides, I used not to have good muscle mass, no matter how hard do I work out. But since I started this product, I have been building muscles with very little effort, I work out not even half as hard as before. What a bonus!

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L Arginine with a buffer

Posted by Reviewer2674750 on Aug 18, 2012

Did not seem as potent (for me) as a non-buffered. But overall still a good value.

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