L-Arginine 350mg Sustained Release

Sustained Release

L-Arginine 350mg Sustained Release
L-Arginine 350mg Sustained Release

L-Arginine 350mg Sustained Release

Sustained Release

How It Works...
How subscriptions work

Products are automatically delivered on your schedule. No obligation, modify or cancel your subscription anytime. You can get the supplements you need, without having to order it every time. Set your frequency to 30, 45, 60, or 90 days.
Learn more...
$ 34.10

Please select your desired option below.


Free shipping on orders over $100
Order by phone 800-483-2532
Safe & Secure online shopping


  • Helps maintain healthy blood pressure in the normal range*
  • Supports cardiovascular health and blood vessel function*
  • Promotes healthy nitric oxide production*
  • Features sustained-release delivery for optimal absorption

Product Description

L-Arginine Sustained Release (SR) is an advanced dietary supplement designed for adults interested in overall cardiovascular health, including maintaining healthy blood pressure in the normal range.*

L-Arginine SR features the amino acid L-Arginine in a unique vegetable-based wax matrix that releases L-Arginine gradually. An optimal blood level of L-Arginine is critical for vascular health. Your endothelium – the layer of cells that line your blood vessels – relies on this amino acid for a healthy production of nitric oxide. In turn, nitric oxide plays a key role in vascular health, including promoting blood vessel relaxation and optimal blood flow.*

L-Arginine SR and its ability to support blood vessel health is ideally suited for athletes, active adults and others interested in maintaining healthy blood vessel function. Adults interested in overall health can benefit from L-Arginine SR as well. L-Arginine – one of the body’s most metabolically versatile amino acids – also plays a role in immune health, detoxification, protein synthesis, hormone regulation, male fertility, and more.*

* 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.


  • No salt, starch, preservatives, artificial color or flavorings
  • Free of common allergens (milk, egg, fish, shellfish, tree nuts, peanuts, wheat and soy)
  • Convenient, easy-to-swallow tablets

Frequently Asked Questions

What can you expect?

L-Arginine SR is a unique dietary supplement specially formulated for men and women to support vascular health, including healthy blood vessel function.*

How does it work?

Each tablet dissolves slowly for a steady release of L-Arginine over 4 to 6 hours. This promotes optimal absorption and tissue retention without an excessive amount of Arginine typically found in regular immediate-release forms.*

How do you take it?

As a dietary supplement for adults, take three (3) tablets twice daily, preferably with meals, or as directed by your healthcare practitioner. It is normal for this product to have a distinctive botanical aroma.

Are there any precautions?

Consult your healthcare professional prior to use if you have or suspect a medical condition, are taking any medications, or are nursing or pregnant. As with all dietary supplements, keep out of reach of children.

What product quality control tests are performed?

L-Arginine SR is manufactured in the United States (Oregon) in a state-of-the-art, FDA-registered facility that meets or exceeds current Good Manufacturing Practices (cGMP). Quality control tests are performed at every stage of the manufacturing process from rigorous raw material testing to finished product testing.

Customer Reviews

Based on 13 reviews

Endurance Products are excellent

Excellent products at reasonable prices

I have been very pleased with all of the products I have purchased from Endurance. No only are they effective but I can take them (with food of course) without upsetting my stomach. Hi rally they are quality products, carefully formulated.




L-Arginine is a great product. BP health without the side effects.


The sustained release really helps.