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.* The L-Arginine used in NOW L-Arginine is pharmaceutical grade.
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.
Ingredients & Nutritional Facts
Supplement Facts
| L-Arginine (Free-Form) 6 g (6,000 mg) ** |
Facility: Not manufactured with yeast, wheat, gluten, soy, corn, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.







FREE Shipping On Orders $99+
Over 200,000 Certified Reviewers
Satisfaction Guarantee
Best Customer Rewards Program
Medical Grade Weight Loss Products
24/7/365 Real Live Customer Service
Free Offers & Products On Orders $50+