NOW Foods L-Arginine Powder helps support healthy blood flow and exercise performance by boosting nitric oxide, helping you feel more energetic and ready for activity. This pharmaceutical grade purity comes from a facility following good manufacturing practices, and the powder is designed for easy dosing. It has stood for value and quality since 1968, making trusted, pure supplements you can rely on.

Available Sizes & Variants:

454 grams L-Arginine Powder — Pure, easy dosing for daily use.

Benefits & Features:

• Supports healthy blood flow for better overall circulation.
• Promotes exercise performance and quicker recovery after workouts, helping you train harder.
• Designed for easy daily use, mixing in water or juice with no aftertaste.
• Manufactured in a facility following good manufacturing practices with pharmaceutical grade purity and strict standards.
• A simple daily habit, two level teaspoons can be mixed with water or juice on an empty stomach for faster absorption and steadier effects during activity.

NOW Foods has built a trusted reputation since 1968, and this L-Arginine Powder embodies that standard with pharmaceutical grade purity and a clean allergen friendly profile. Each serving provides 6,000 mg of pure L-arginine, with no fillers or excipients, making it simple to fit into daily routines. The powder is vegan, non GMO, and free from common allergens, packed in a 454 gram tub. Mixes quickly and easily, convenient for daily use. Many customers pair it with other wellness staples, like n acetylcysteine or l carnitine and acetyl l carnitine, to support a broader routine.

L-Arginine (Free-Form)

• GTIN: 733739002105
• Manufacturer: NOW Foods
• Categories: ArginineL-ArginineNitric Oxide BoostersNOW Foods
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Mix 2 level teaspoons (approximately 6 g) daily in at least 8 oz. of juice or water, preferably on an empty stomach. Store in a cool, dry, dark place after opening. For adults only. Not for pregnant or nursing women. Consult a physician if taking medication (especially antihypertensives, anticoagulants, and antidiabetic drugs), have a medical condition (especially asthma or renal disease), or are planning to have surgery. This product should be avoided by persons with glaucoma or herpes simplex unless otherwise prescribed by a physician. Do not use if you have had a myocardial infarction or have established coronary artery disease. Keep out of reach of children.

Please consult the product packaging for accurate instructions on how to use the product.

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: L-Arginine (Free-Form)

L-Arginine is a conditionally essential amino acid that serves as a direct precursor to nitric oxide, a molecule involved in relaxing blood vessels and supporting normal blood flow.

This powder is pure L-Arginine, manufactured to pharmaceutical-grade quality in a GMP facility and suitable for vegan/vegetarian diets.

What Does L-Arginine Do?

L-Arginine helps with nitric oxide production, which can aid in maintaining normal circulation and energy metabolism during activity.

It also helps with urea metabolism and protein synthesis, contributing to nitrogen balance and general muscle metabolism, with the overall role recognised as part of normal physiological function.

This supplement is not intended to diagnose, treat, cure, or prevent any disease.

NOW Foods stood out in our assessment for its enduring leadership in the natural products space and its proven pledge to quality from field to finished product. Established in 1968, NOW Foods is recognised as a trusted, value-led brand with a track record of delivering high-quality supplements that emphasise purity and accessibility. The manufacturer runs a GMP-compliant facility and pursues pharmaceutical-grade purity, reinforcing our confidence in consistent product quality. Our expert team evaluated NOW Foods against our standards for manufacturing rigour, transparency, and safety, emphasising their strong quality control and sourcing practices our expert team of doctors, nurses, and nutritionists noted for rigorous assessment our quality assurance criteria. This brand’s clear dedication to quality at every production stage helped us select them as the ideal partner for this L-Arginine powder, aligning with the product’s need for a pure, well-controlled formulation.