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NOW Supplements, L-Arginine 500 mg, Nitric Oxide Precursor, Amino Acid, 250 Veg Capsules

4.5 out of 5 stars 4,717 ratings
To see product details, add this item to your cart. You can always remove it later.

Purchase options and add-ons

Brand NOW
Flavour Unflavored
Primary supplement type protein
Unit count 250 Count
Item form Capsule
Item weight 0.22 Kilograms
Item dimensions L x W x H 7.1 x 7.1 x 13 Centimetres
Special ingredients L-Arginina
Diet type Halal
Product benefits Muscle Growth

About this item

  • CONDITIONALLY ESSENTIAL AMINO ACID: Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion, as well as in DNA synthesis and protein production*
  • NITRIC OXIDE PRECURSOR*: Arginine plays an important role in the dilation of blood vessels*
  • CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, Kosher (contains gelatin)
  • 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).
  • FAMILY OWNED & OPERATED: Proudly packaged in Canada by a family owned and operated company.
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Important information

Safety Information

Consult a health care practitioner prior to use if you have human herpes virus, sickle cell anemia, or are taking antihypertensives, cyclosporine, estrogens, birth control medications, medroxyprogesterone, norethindrone, nitrates, potassium-increasing drugs, sildenafil, xylitol, and/or aminophyllins. Do not use if you have had a myocardial infarction (heart attack), or if you have gout, decreased platelet count, elevated blood-urea-nitrogen, serum creatine and creatinine, delayed menses, asthma, or are pregnant or breastfeeding.

Ingredients

Each capsule contains: L-Arginine 500 mg. Non-Medicinal Ingredients: Vegetable Capsule (hypromellose, water), Stearic Acid (vegetable source), Silica.

Directions

Adult Dosage: Take 2 capsules 1-3 times daily as required, between meals or at bedtime with a carbohydrate drink to facilitate absorption. Do not use beyond 8 weeks.

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.

Product description

L-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. Our NOW natural and organic Supplements are an effective way to ensure you and your loved ones are getting essential vitamins, minerals and nutrients for daily optimal health. Since 2000, the NOW brand has been supporting Canadians with a mission to provide products that empower people to lead healthier lives. 70% of the NOW products in Canada are made or packaged in Guelph, Ontario, employing hundreds of Canadians from coast to coast. NOW performs 31,000 quality tests every month to ensure you get the highest quality supplements at the best price possible. Our promise - what is on the label, is precisely what is in the bottle.

From the brand

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    Natural at NOW means products are sustainable, plant-derived, and finished as close to nature as possible without harmful substances.

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  4. High-Quality Ingredients

    Strict quality requirements and scientific processes ensure that every ingredient accepted into our facilities meet our specifications.

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  6. Comprehensive Testing

    NOW's in-house laboratories test from raw ingredients to finished products to ensure that whats on the label is in the bottle.

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  8. Superior Manufacturing

    NOW meets/exceeds FDA CGMPs, underscoring our commitment to quality. NOW was one of the first to be CGMP certified by a third-party.

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Product information

Technical Details

Manufacturer ‎NOW
Place of Business ‎NOW Canada Health Group, 5068 Whitelaw Road, RR6 Guelph, ON N1H 6J3
Item model number ‎0031
Product Dimensions ‎7.14 x 7.14 x 13.03 cm; 220 g
ASIN ‎B0013OVX58

Additional Information

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Product details

  • Is discontinued by manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 7.14 x 7.14 x 13.03 cm; 220 g
  • Date First Available ‏ : ‎ April 28 2009
  • Manufacturer ‏ : ‎ NOW
  • Place of Business ‏ : ‎ NOW Canada Health Group, 5068 Whitelaw Road, RR6 Guelph, ON N1H 6J3
  • ASIN ‏ : ‎ B0013OVX58
  • Item model number ‏ : ‎ 0031
  • Country of origin ‏ : ‎ USA
  • Customer Reviews:
    4.5 out of 5 stars 4,717 ratings

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Top reviews from Canada

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  • Client d'鶹
    5.0 out of 5 stars ces articles rpond mes attentes merci J'ai voulu commander ...
    Reviewed in Canada on September 23, 2016
    Verified Purchase
    ces articles rpond mes attentes merci J'ai voulu commander un autre article en anglais il me dise d'avoir une nouvelle adresse Je n'ai pas 2 adresse de livrraison Merci R Simard
    One person found this helpful
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  • dylan
    5.0 out of 5 stars Five Stars
    Reviewed in Canada on April 3, 2017
    Verified Purchase
    Good quality, fast shipping
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  • kenneth
    4.0 out of 5 stars Good value
    Reviewed in Canada on January 1, 2025
    Verified Purchase
    Good value
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  • Mikey J
    5.0 out of 5 stars Five Stars
    Reviewed in Canada on January 4, 2017
    Verified Purchase
    No Comment..heh
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  • Pinky
    5.0 out of 5 stars Five Stars
    Reviewed in Canada on July 24, 2014
    Verified Purchase
    Would definitely deal with procanada again
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  • jdp
    5.0 out of 5 stars Good Product
    Reviewed in Canada on March 28, 2015
    It's a great product.. It really does hope. Just won't be re-ordering as postage is toooo expensive in respect to the product
    One person found this helpful
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  • Reddix
    3.0 out of 5 stars Maybe it works for others but I won't be ordering again - just ANOTHER "health" supplement disappointment for me
    Reviewed in Canada on November 22, 2014
    Verified Purchase
    After taking this for a few weeks, I must say I haven't felt any beneficial changes whatsoever. Maybe it works for others but I won't be ordering again - just ANOTHER "health" supplement disappointment for me... On the positive side, item came on time and well-packaged.
    One person found this helpful
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  • 鶹 Customer
    4.0 out of 5 stars appears to be good quality and while it is a little early to ...
    Reviewed in Canada on August 5, 2016
    Verified Purchase
    appears to be good quality and while it is a little early to tell it seems to be working well
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Top reviews from other countries

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  • Gloria saldivar
    5.0 out of 5 stars Llego bien
    Reviewed in Mexico on February 4, 2025
    Verified Purchase
    Lo empezare. Probar
    Report
  • aamerams
    5.0 out of 5 stars ?????
    Reviewed in Saudi Arabia on July 7, 2024
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    ?????
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  • P C
    5.0 out of 5 stars Good Product
    Reviewed in the United States on May 7, 2025
    Verified Purchase
    Good brand for hard to find supplements. No complaints.
    Report
  • ߤߤߤ
    5.0 out of 5 stars ʼ3Ŀ
    Reviewed in Japan on October 14, 2017
    Verified Purchase
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  • Sohaiil Aziz Merchant
    5.0 out of 5 stars Nice product
    Reviewed in India on June 6, 2019
    Verified Purchase
    Nice product
    Report

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 and follow labels, warnings, and directions before using or consuming a product. This product may not be right for you. 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. 鶹.ca assumes no liability for inaccuracies or misstatements about products.