SKU: 68325977199

L-arginine - Sustained + Immediate Release, 1000mg - 120 Tablets

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Description

L-arginine - Sustained + Immediate Release, 1000mg - 120 TabletsRead more about this product What is Doctor's Best Sustained Plus Immediate Release Arginine? Doctor's Best Sustained Plus Immediate Release Arginine promotes a healthy cardiovascular system, enhances healthy circulation and supports heart function. L arginine has been shown to support the cardiovascular system, through its conversion to nitric oxide. Research suggests L arginine supplementation may also have positive benefits on athletic performance.

Read more about this product

What is Doctor's Best Sustained Plus Immediate Release Arginine?
Doctor's Best Sustained Plus Immediate Release Arginine promotes a healthy cardiovascular system, enhances healthy circulation and supports heart function. L-arginine has been shown to support the cardiovascular system, through its conversion to nitric oxide. Research suggests L-arginine supplementation may also have positive benefits on athletic performance. Two tablets of Doctor's Best Sustained Plus Immediate Release Arginine delivers 1000mg L-arginine in a bilayer tablet, with two tablets providing 500 mg of sustained release and 500 mg of immediate release L-arginine. This technology allows for enhanced blood levels of L-Arginine for a continuous period of up to 8 hours.

How does it work?
Oral L-arginine supplementation has been shown in clinical studies to support various aspects of cardiovascular health. A randomized double-blind placebo-controlled trial found that six weeks of L-arginine supplementation enhanced circulation and supported healthy heart function compared to placebo. The L-arginine effect was due to its role in NO production. Other clinical trials have shown that oral L-arginine supplementation contributes to enhanced exercise tolerance because of its ability to enhance cardiac circulation and vasodilation of blood vessels. L-arginine enrichment of the diet in healthy individuals was shown to support blood pressure already in the normal range. The overall results of these and other clinical trials showed that long-term administration of this amino acid significantly enhanced endothelial function.

Why take Sustained and Immediate Release Arginine?
The normal aging process in humans has been found to be associated with progressive changes in endothelial function (cells that line the inner surfaces of blood vessels). Research suggests that a major reason for these common changes associated with aging is reduced production or bioavailability of nitric oxide (NO) in vessels and tissues. L-arginine is a substrate for the enzyme nitric oxide synthase, required for the production of nitric oxide in the body. Nitric oxide is a substance critical for the maintenance of normal vascular function. NO mediates a number of physiological effects on the cardiovascular system, including supporting healthy endothelial function, enhancing cardiovascular health and displaying potent antioxidant properties against free radicals.



What is In

Doctor's Best
L-Arginine - Sustained + Immediate Release, 500mg - 120 tablets
Food supplement in tablet form, containing L-Arginine and minerals
Nutrition Facts
Serving Size: 2 Tablets
Servings Per Container: 60
  Amount
Per Serving
%RI*
L-Arginine (as 500 mg immediate release and 500 mg sustained release from L-Arginine alpha-Keto-Glutarate) 1000 mg

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

Ingredients: L-Arginine (as 500 mg immediate release and 500 mg sustained release from L-Arginine alpha-Keto-Glutarate)

Other ingredients: Microcrystalline cellulose, stearic acid, silicon dioxide, magnesium stearate (vegetable source), croscarmellose sodium, modified cellulose (coating).

Warnings: Non-GMO, Gluten Free, Soy Free, Vegan. Store in a cool dry place.

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SKU: 68325977199

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4.1 ★★★★★
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Product Reviews
J
Verified Purchase
JC
New York, US
★★★★★ 4
Large-format printer, fairly reliable and quick but so-so on ink usage
Style: WF-7820, Set: SINGLE TRAY (250 sheets/FAX/ADF/PRINT/COPY/SCAN
Large-format scanner/printer. Accepts paper from the front (main) cassette OR through a back paper tray if you need to print something on different paper. Individual cartridges for ink. Not particularly economical on ink (and the ink of course is expensive) but the cartridges are individual (one each red, yellow, blue and black) and after a couple years of use, I've NEVER had to clean the print heads - printing is always clean and clear. Has had some issues connecting to wifi so have found the cable connection to the computer is best/more reliable. It's hard to find an absolutely perfect printer but this one comes close. I use it mostly for large scanning/printing as it goes up to 11 x 17 inches. One drawback to note is that after only a short time, the document feeder pulls the documents through crookedly, so scans/prints from the document feeder do NOT come out straight (for both single and double-sided scans.) This model is a few years old so there may be more recent Epson models on the market as of 2026.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
T
Verified Purchase
The Boom Boom Room STL
Lake Worth, US
★★★★★ 5
All printer suck this one sucks less. :). Love it.
Style: WF-7820, Set: SINGLE TRAY (250 sheets/FAX/ADF/PRINT/COPY/SCAN
If you ever saw office space the movie there is a scene where he get mad at his printer and we all relate because printers have a lot of moving parts that can go bad. I have not got or set up a printer for many years. So it was a tad hard but honestly not really. It takes time because it does so much. And I wanted to rush but they truly did everything they could to baby sit us. Google the printer type with the word download. That is what I did and you come to a page you find and down load set up software. I set it up with usb. But also wireless. A tad tricky but only because I was not following directions. It takes some time to find all the packing tape and that’s fine. It’s bigger than most printers. So when I was looking for printers they were 400 or 1-2 thousand. And then this one less than two hundred. In business two hundred is like disposable. At home it’s a nice dinner. So I am impressed for the money what ya get. Personally. The screen is huge. And clear. And you can read it from many angles. It’s animated. Touch. It’s flexible you can tilt it. Better than the old brother with with a thumbnail. I also set it up on my phone. It was not hat hard and printed a photo and it printed color edge to edge and it’s on standard paper. Look nice. And like a photo in a magazine. Can’t wait to print something 13 by 19. We own a venue restaurant and do shows can’t wait to make show posters. I’m going to buy one for home but want to see what printing cost is.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 26, 2024
D
Verified Purchase
DarkMeW
Birmingham, US
★★★★★ 1
Epson quality has sunk into the nameless abyss
Style: WF-7820, Set: SINGLE TRAY (250 sheets/FAX/ADF/PRINT/COPY/SCAN
Really shocked that this is how bad Epson products have gotten. This MFC isn't even comparable to models that came out 20 years ago. First off the scanner is extremely poor quality. My Brother MFC from 2009 can pick up light blues and reds and brightness of the paper better then this Epson can. Which is just sad. Very poor color gambit for the scanner, it would be better to take photos with your phone and send them to the printer then use the scanner. I scan in watercolors and ink paintings/sketches and had to pull out my decade old scanner rather then use this one. Then there is the quality of the prints, which is mediocre at best. Colors don't reproduce well and you can't adjust the profile enough to get it to print correctly. Then there is the insane amount of ink this thing uses. The amount of pages you can print per cartridge is a complete lie, think half if not a 3rd of the page count unless you are only printing on a 5.5x4 sheets of paper. Cartridges are overpriced and they can not be refilled, Epson installed a one use only chip in each of their cartridges and even if it had only used half the ink in the cartridge it won't print with it anymore. They also force updates that will deactivate any cartridge you haven't replaced in a while even if it is a genuine Epson cartridge. This printer's only purpose is to be a money pit for ink cartridges you don't actually need. Never buy Epson, they have become a dishonest unethical company with a shotty product line. *update, Epson gets worst. Firmware got updated by accident. Apparently now no cartridges work with printer, even bought from Epson. Everyone is unrecognizable by the printer. Epson has gone overboard on making their printers n compatible with remanufactured cartridges that they decided to make even their own cartridges no longer work. Turning the printer into a 50lb paper weight. NEVER BUY AN EPSON PRODUCT!!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 4, 2023
O
Verified Purchase
osvaldo colon
West Palm Beach, US
★★★★★ 5
Nice printer
Style: WF-7820, Set: SINGLE TRAY (250 sheets/FAX/ADF/PRINT/COPY/SCAN
Printer work according to what I was expecting . Prints 🖨 great and fast / copy fast . Set up is easy but wifi and wireless connection is very tricky with phone set up . it may take some extra time . I look at videos on you tube for wifi & wireless set up . The APP there's a few App . I install the Epson smart App on my phone. Or the Epson iprint . The panel display will walk you through set up . also work great for me great display . I also like the lower tray went ready to print it comes out automatically and closes automatically went turning printer off .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
R
Verified Purchase
RS
Waukegan, US
★★★★★ 5
So fun with good results!
Works great so far! Never used a sublimation printer or heat press before in my life and the shirt below is my attempt. The ghosting was totally user error and not due to the print. The set-up process was a bit long because it involved a 14 minute ink cycle, but the instructions walk you through every step very clearly so there were no issues. Follow them and you will be up and running in about 25 minutes. It did not come with paper as represented so be sure you have some on hand. The print quality is great from my perspective and from my shopping around, it's a great value for the money. There is little to no noise and it prints much faster than I was expecting.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026

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