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NOW Supplements, L-Arginine 1,000 mg, Amino Acid, 120 Tabs

  • Based on 15,588 reviews
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Availability: In Stock.
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Arrives Thursday, Oct 8
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Size: 120 Count (Pack of 1)


Features

  • DOUBLE STRENGTH L-ARGININE: NOW offers this non-GMO, double strength L-Arginine supplement in 1,000 mg tablets.
  • NITRIC OXIDE PRECURSOR: Arginine plays an important role in the dilation of blood vessels.
  • CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, Kosher, Soy Free
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
  • Packaged in the USA by a family owned and operated company since 1968.

Description

Now L-Arginine comes in extra strength 1,000 mg tablets and is non-GMO. Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion, as well as in DNA synthesis and protein production. It is an important precursor of nitric oxide (NO) and thus plays a role in the dilation of blood vessels. The L-Arginine used in this product is pharmaceutical grade. Natural color variation may occur in this product.

Product Dimensions ‏ : ‎ 2.7 x 2.7 x 4.75 inches; 8.64 ounces


Item model number ‏ : ‎ 0035


Department ‏ : ‎ Health and Beauty>Health and Wellness


Date First Available ‏ : ‎ January 8, 2004


Manufacturer ‏ : ‎ NOW Sports - Nutrition and Wellness


Best Sellers Rank: #5,820 in Health & Household (See Top 100 in Health & Household) #3 in L-Arginine Nutritional Supplements #709 in Sales & Deals


#3 in L-Arginine Nutritional Supplements:


#709 in Sales & Deals:


Customer Reviews: 4.5 4.5 out of 5 stars (15,588)


Brand Name: NOW


Primary Supplement Type: protein


Item Form: Tablet


Diet Type: Halal, Kosher, Vegan, Vegetarian


Product Benefits: Metabolism Management, Vascular Health Support


Age Range Description: Adult


Container Type: Bottle


Dosage Form: Tablet


Model Name: NOW Supplements, L-Arginine 1,000 mg, Nitric Oxide Precursor*, Amino Acid, 120 Tablets


Supplement Formulation: Individual Supplement


UPC: 733739000354


Manufacturer: NOW Sports - Nutrition and Wellness


Global Trade Identification Number: 54, 98


Model Number: 0035


Manufacturer Part Number: 0035


Unit Count: 120 Count


Item Weight: 0.25 kg


Item Dimensions: 2.7 x 2.7 x 4.75 inches


Number of Items: 1


Total Servings Per Container: 120


Package Size Name: 120 Count


Flavor: Unflavored


Special Ingredients: L-Arginine


Dose Release Method: Immediate Release


Material Features: Vegetarian


Material Type Free: wheat, gluten, soy, milk, egg, fish, shellfish, sesame


Pill Coating: vegetarian


Specific Uses For Product: Amino Acid


Allergen Information: Dairy Free, Egg Free, Non-GMO, Nut Free, Soy Free


Recommended Uses For Product: Amino Acid


Color: Off White


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Oct 8

This item is non-returnable:

Non-returnable due to Food safety reasons

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Great for the gym
Size: 120 Count (Pack of 1)
Review Image by Jeff B.
Review Image by Jeff B.
I’ve been using NOW L-Arginine 1,000 mg for a while and would definitely recommend it for anyone who works out regularly. I train three times a week for 45 minutes. With L-Arginine I have less fatigue during workouts, and post-workout muscle soreness is minimal. I take it about an hour before and the muscle pump kicks in almost immediately which seems to make the weight exercises move smoothly. One important note is that the tablets are huge, so be sure to swallow them lengthwise. Overall I think this is a good product at a decent price. ... show more
Reviewed in the United States on April 5, 2026 by Jeff B.
    • good quality supplement from a trusted brand
Size: 120 Count (Pack of 1)
been taking these for a while now to help with circulation and getting a better pump during workouts and i can feel a difference for sure. the tablets are on the bigger side so just take them with a good amount of water and you'll be fine. NOW Foods is a brand i trust and this product lives up to their reputation, feels like quality stuff without any weird stuff added in. really solid value for what you get and i plan on buying these again. ... show more
Reviewed in the United States on April 5, 2026 by Marc
    • good value
Size: 120 Count (Pack of 1)
GOOD value. I like Now brand.
Reviewed in the United States on August 3, 2026 by dave the vegan
    • High-Quality L-Arginine Supplement - Excellent Value!
Size: 120 Count (Pack of 1)
Effectiveness: This NOW Foods L-Arginine supplement has been excellent for supporting my fitness goals and overall cardiovascular wellness routine. The 1,000mg dosage provides substantial amino acid support that I've incorporated into my pre-workout regimen for enhanced performance and recovery. I appreciate having a pure, high-potency L-Arginine supplement that serves as an effective nitric oxide precursor for supporting healthy circulation and exercise performance. The tablet format is convenient for consistent daily dosing, and I've found the timing flexibility helpful for optimizing my supplementation around workout schedules. The 120-tablet bottle provides excellent coverage for extended supplementation without frequent reordering. Quality: NOW Foods has built a solid reputation for producing reliable nutritional supplements, and this L-Arginine maintains their quality manufacturing standards. The tablets are well-formed and dissolve properly without causing stomach upset when taken with adequate water as recommended. The amino acid appears to be pure and well-absorbed, providing the bioavailability needed for effective supplementation. The manufacturing quality ensures consistent potency across different bottles, giving me confidence in reliable results. The packaging protects product integrity and maintains freshness throughout the bottle's shelf life. Value for Money: This L-Arginine supplement provides outstanding value when you consider the high potency and generous tablet count at a very competitive price point. The 120-tablet supply offers excellent coverage for four months of daily supplementation, making the cost per dose very economical compared to smaller bottles or premium brands. The quality and effectiveness make this far more cost-effective than trying multiple inferior products or dealing with inconsistent amino acid sources. The reliable manufacturing and proven results make this a smart investment for serious fitness supplementation and cardiovascular support. This L-Arginine supplement has become a valuable part of my fitness nutrition routine and provides reliable amino acid support. Highly recommend consulting with healthcare providers about incorporating L-Arginine supplementation into your wellness and fitness routines! ... show more
Reviewed in the United States on November 28, 2025 by Amy Biggs
    • Holy Hardness Batman!
Size: 120 Count (Pack of 1)
Well my friends. I had heard good things about L-Arginine with regards to, ya know, stiffening things up a bit. Of course, I was more than a bit skeptical. I am 45 years old, and Herbie still loves to get up and dance, but as of late he seems to not want to dance as long as I do. He would bust out of the gate like Secretariat, but didn't want to keep that stride for the entire race. I tried to reason with him and I took a firm stance. He, however, took a slightly softer stance. We have debated and sometimes, if the mood is right, Herbie would comply for a bit longer. Normally he gets the job done, and my girlfriend was fine with everything. NOT ME. I wanted 25 year old Herbie like he was glistening out of the showroom. I wanted him to run a Daytona 500, not a 10 lap coast which slowly came down to idle. I have Viagra which I will use on occasion if I really wanna go for hours and walk around with a baseball bat that can be used during a home run derby. But I do not like the headaches, flush face, and stuffed up nose that would accompany it. ENTER THIS CRAZY STUFF. I have been taking 2 tablets a day for a week. One in the morning, one before bed. No joke, by day 3 Herbie was acting like he just had a tune up, lube job (haha), and a new set of tires. This is not a testimonial written by the company or some employee. I am just like you. This is legit. I have had more sex this week with my girlfriend than in recent memory. I no longer worry about when he will decide to slow down and pull off to the shoulder leaving me looking like a lost puppy hoping for a tow. He just wants to keep going and I feel like I took Viagra, but without the side effects! Yesterday? We went at it 3 times. All 3 times, completed the race the way he started. These aren't sprints. We are talking 45+ minute cruises down the interstate. Needless to say, I am ecstatic with the product and highly recommend it to any others who have a little buddy that seems to want to putter out after a quick drive around the block. TRY THIS STUFF. You and your Herbie will thank me. **Disclaimer- Could this all be in my head? Placebo effect? Maybe? But I honestly don't think so. My girlfriend doesn't think so. I know what Viagra feels like, and this is similar. At least for me. Good luck! ... show more
Reviewed in the United States on October 18, 2017 by JJ
    • works, but is a choking hazard
Size: 120 Count (Pack of 1)
Product seemed to work by increasing N.O. pre-workout, verified by an incredible pump and vascularity. However, this is if you don't choke trying to swallow the giant, hard, dry, sharp tablet. Seriously, have someone on standby in case your immediate gag reflex causes a sheer panic-educed choking fit. Even when you are able to get it down, many times it scratches the throat enough to make you feel like it's stuck for a day or two. I don't think it would cost too much to capsule. I love NOW products, just this one is "hard to swallow". ... show more
Reviewed in the United States on October 5, 2025 by Chris
    • It works for ED. Just take a 30 minutes before.
Size: 120 Count (Pack of 1)
This is fantastic stuff except the pills are a little bit big in size. Do I feel better sort of it does help with my ED I think but L arginine doesn’t last that long and the ingredient seem like they’re high-quality. Energy level but more for ED. I don’t have any stomach discomfort when I take it and it doesn’t give me jitteriness or anything weird like that. Overall I good value. ... show more
Reviewed in the United States on January 19, 2026 by BBQ Lover
    • 👍
Size: 120 Count (Pack of 1)
👍
Reviewed in the United States on August 17, 2026 by suman karki

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