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Doctor's Best Sustained Plus Immediate Release L-Arginine 500mg, 120 Bilayer Tablets

4.2 out of 5 stars 66 customer reviews
| 3 answered questions
About the Product
  • Has positive benefits on athletic performance
  • Promotes a healthy cardiovascular system & enhances healthy circulation
  • Gluten Free, Non-GMO, Vegan
  • Label images may vary

Frequently Bought Together

  • Doctor's Best Sustained Plus Immediate Release L-Arginine 500mg, 120 Bilayer Tablets
  • +
  • Doctor's Best High Absorption Coq10 w/ BioPerine (100 mg), 120 Soft gels
  • +
  • Doctor's Best High Absorption Magnesium (200 Mg Elemental), 240-Count
Total price: $43.41
Buy the selected items together


Product Description

Size: 120

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 cardio- vascular 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.*

Product Details

Size: 120
  • Product Dimensions: 2.4 x 2.4 x 4.4 inches ; 4.8 ounces
  • Shipping Weight: 5.6 ounces (View shipping rates and policies)
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B001UY2918
  • UPC: 885460392038 753950002005
  • Item model number: 753950002005
  • Average Customer Review: 4.2 out of 5 stars  See all reviews (66 customer reviews)
  • Amazon Best Sellers Rank: #18,916 in Health & Personal Care (See Top 100 in Health & Personal Care)

Important Information

Safety Warning
not available

Indications
not available

Ingredients
L-Arginine (as 500mg immediate release and 500mg sustained release from L-Arginine alpha-Keto-Glutarate) Cellulose, vegetable stearins, magnesium stearate (vegetable source), silicon dioxide.

Directions
Take two tablets one to two times daily, or as directed by a nutritionally informed physician. Store in a cool dry place.

Legal Disclaimer
Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. Please see our full disclaimer below.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Size: 120 Verified Purchase
My blood pressure was a little bit high, but not high enough to get prescription medicine so in Consumer Reports we read that L-Arginine lowers blood pressure, they also recommend that you get the sustained release so you get it throughout the day. I take one of these in the morning and one at night and my blood pressure is exactly normal. This was the best deal I could find on amazon because 1. It was the only 500mg sustained release and 2. The other one that is 350mg is not as much so it may not be as helpful.
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Size: 120 Verified Purchase
Have to admit, at first this supplement scared me badly! I took one dose right before bed, and was kept awake with horrible heart palpitations!

After some research, I found out that L-arginine slightly lowers potassium levels in the blood. I decided to continue, and make sure I had fruit and veggies with each meal or snack, no exceptions.

Soon my body adjusted, and I do not have be so strict anymore. In fact, it helps me sleep a little better now.

Overall, my biggest selling point on it though, is that it quickly lowered my blood pressure about 10-15 points so far. It's been enough that the doctor decided not to put me on meds for it, and I'm hoping it will continue to drop a little more to normal.
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Size: 120 Verified Purchase
I had been taking this daily, but recent research seems to indicate that there are risks to long-term use, so I've backed off. It clearly has short term (acute) impact--opening up blood vessels, but over the long term, there's some indication that it can actually damage vessels--clearly not the effect you want. There may be ways to mitigate the downsides of arginine supplementation, but until more research is done, I'd urge caution and look more to food sources like almonds as sources of arginine in the diet.
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Size: 120 Verified Purchase
No different than some of the other L-arginine i have taken other than the fact that it offers both the sustained and immediate release in one tablet which i think does make it have a better bioavailability .
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Size: 120 Verified Purchase
I was on Benicare and could not function due to being tired all the time, hair falling out and cognative problems. This product has no side effects and my blood pressure has been 119 over 79 for several months now.
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Size: 120 Verified Purchase
One of the reasons I got this product is that it is suppose to help with thinning hair. It does, not right a way but after few month you do see some new hair filling in. I doubled the recommended dose tho since their do not seem to be any bad side effects.
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Size: 120 Verified Purchase
This product delivered as advertised! i can feel it start to work moments after taking it and still hours later as well.
If you're looking for something to help with your workouts or just your everyday health and well being give this a shot
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Size: 120 Verified Purchase
this stuff works as well as the NO2 "proprietary transport" products with the big hype and the bigger price tags..definitely improves cell uptake of whatever you stack it with(Vitamins, anti inflammitories, etc.)
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Disclaimer: While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Amazon.com assumes no liability for inaccuracies or misstatements about products.