Price: $17.29
(as of Dec 10, 2025 12:52:36 UTC – Details)
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.
Is Discontinued By Manufacturer : No
Product Dimensions : 2.7 x 2.7 x 4.75 inches; 3.53 ounces
Item model number : 0035
Department : Health and Beauty>Health and Wellness
Date First Available : January 8, 2004
Manufacturer : NOW Sports – Nutrition and Wellness
ASIN : B0013OVX3U
Best Sellers Rank: #4,233 in Health & Household (See Top 100 in Health & Household) #4 in L-Arginine Nutritional Supplements #514 in Sales & Deals
Customer Reviews: 4.5 4.5 out of 5 stars (14,369) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
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.
Customers say
Customers find the L-Arginine supplement to be of good quality and effective, noting it helps with blood flow, particularly for vascularity and blood pressure, while providing sustained energy boost and mental alertness. They consider it good value for money. The size of the pills receives mixed reactions – while some find them effective, others complain about their large size and difficulty swallowing them. Customers report mixed experiences with pain levels, with some feeling better while others experience aches and pains.