NOW Foods L-Arginine 500 mg – 250 Veg Capsules for Nitric Oxide Support

NOW Foods L-Arginine 500 mg is a pharmaceutical-grade amino acid supplement formulated to support nitric oxide production, normal vascular function, and protein metabolism. Each vegetarian capsule supplies 500 mg of free-form L-Arginine, while the two-capsule serving provides 1,000 mg.

L-Arginine is a conditionally essential amino acid involved in several important biological processes, including urea metabolism, protein production, and DNA synthesis. It also serves as a precursor to nitric oxide, a naturally produced compound that helps maintain normal blood vessel relaxation and healthy circulation. This makes L-Arginine a practical addition to active lifestyle and general wellness routines.

Each bottle contains 250 vegetarian capsules, providing 125 servings. The flexible 500 mg capsule strength makes it easy to follow the label’s divided daily directions. This formula is vegan, non-GMO, halal, kosher, soy-free, nut-free, dairy-free, egg-free, and made without gluten. Manufactured and quality tested by NOW Foods under GMP standards, this L-Arginine supplement is suitable for adults seeking a straightforward, single-amino-acid formula with no unnecessary active ingredients.

Key Benefits

• Supports the body’s natural nitric oxide production
• Helps maintain normal vascular function
• Supports healthy circulation as part of overall wellness
• Supports normal protein production and amino acid metabolism
• Provides 500 mg of pharmaceutical-grade L-Arginine per capsule
• Offers a convenient vegan, free-form amino acid formula

Product Details

Featured Ingredients

Free-Form L-Arginine: A pharmaceutical-grade, conditionally essential amino acid that serves as a precursor to nitric oxide. L-Arginine also participates in normal urea metabolism, protein production, and other essential biological processes.

How to Use

Take 2 capsules twice daily as needed. Take between meals or at bedtime with at least 8 oz of water or juice to facilitate absorption. Store in a cool, dry place after opening.

For adults only. Do not use during pregnancy or while nursing. Consult a healthcare professional before use if taking medication especially antihypertensive, anticoagulant, or antidiabetic medication or if managing a medical condition, particularly asthma or kidney disease. Consult a physician before surgery.

Avoid use if you have glaucoma or herpes simplex unless prescribed by a physician. Do not use if you have experienced a myocardial infarction or have established coronary artery disease. Keep out of reach of children.

Best Time to Take

Take between meals or at bedtime with at least 8 oz of water or juice. If taking both daily servings, separate them according to the product label or guidance from a healthcare professional.

Best For

• Adults seeking nitric oxide production support
• Active lifestyle and fitness routines
• People seeking normal vascular function support
• Adults supplementing with free-form amino acids
• Those who prefer flexible 500 mg capsules
• Vegan, non-GMO, and soy-free wellness routines