NOW L-Arginine 1,000 mg Tablets — 120 ct, Pharmaceutical-Grade Amino Acid for Nitric Oxide & Circulation Support

NOW L-Arginine 1,000 mg tablets deliver a high-strength, pharmaceutical-grade source of the amino acid L-arginine to support natural nitric oxide pathways and protein metabolism.

NOW’s double-strength L-Arginine provides a convenient daily tablet form of the conditionally essential amino acid, supplied in a 120-tablet bottle made in the USA. This product is non-GMO, Kosher, and manufactured under strict GMP standards. L-Arginine contributes to normal urea cycle function and is a biochemical precursor to nitric oxide (NO), a molecule involved in blood vessel dilation and circulation processes. Tablets may vary slightly in color due to natural ingredient characteristics.

How should I take NOW L-Arginine 1,000 mg for daily use?

Follow the label for serving size and frequency; many people take this supplement once or twice daily with water and a meal to minimize stomach upset. Start with the lowest effective dose and consult a healthcare professional if you have underlying health conditions or take medications.

• Each tablet contains 1,000 mg pharmaceutical-grade L-Arginine.
• Common routine: one tablet daily or as recommended by a practitioner.
• Take with food to reduce potential gastrointestinal discomfort.
• Do not exceed recommended dosage on the bottle without advice from a healthcare provider.

What is in this supplement and how is it made?

NOW uses pharmaceutical-grade L-Arginine in a tablet formulation that is non-GMO and soy-free. The product is Kosher certified and produced in the USA under NPA A-rated GMP quality assurance, with laboratory testing for potency and stability.

• Active ingredient: L-Arginine (1,000 mg per tablet).
• Certifications: Non-GMO, Kosher, Soy Free, GMP quality assured.
• Manufactured and packaged in the USA by a family-owned company since 1968.
• Natural color variations may occur between batches.

What benefits does L-Arginine support and what should I expect?

L-Arginine is an amino acid involved in protein synthesis and the urea cycle, and it serves as a biochemical precursor to nitric oxide, which is associated with blood vessel relaxation. Responses vary by individual; this supplement supports normal metabolic and circulatory pathways rather than providing instantaneous effects.

• Contributes to normal protein production and nitrogen balance.
• Precursor to nitric oxide, linked to vascular relaxation processes.
• Supports standard urea metabolism and amino acid pathways.
• Not formulated as a cure or treatment for specific diseases.

Are there precautions or interactions I should know about?

People with certain medical conditions or taking prescription drugs should check with a healthcare professional before starting L-Arginine. Those with low blood pressure, on blood thinners, or taking erectile dysfunction medications may require monitoring or dosage adjustments.

• Consult a healthcare provider if pregnant, nursing, or managing chronic conditions.
• May interact with medications affecting blood pressure or blood clotting.
• Monitor for gastrointestinal upset; take with food if needed.
• Follow labeled serving size and storage instructions on the bottle.

Who is this for: NOW L-Arginine 1,000 mg is intended for adults seeking a high-dose, reliable source of the amino acid in tablet form—suitable for those wanting to support normal amino acid metabolism and nitric oxide-related pathways, individuals preferring non-GMO and Kosher-certified supplements, and anyone who values products made under GMP standards in the USA. It is not intended as a medical treatment; consult a healthcare professional for personalized guidance.

Ingredients

L-Arginine (from L-Arginine HCl) Other Ingredients: Microcrystalline Cellulose, Hydroxypropyl Cellulose, Stearic Acid (vegetable source), Croscarmellose Sodium, Silicon Dioxide and Vegetarian Coating [hypromellose (cellulose), calcium carbonate, glycerin].