NOW Foods L-Arginine is a daily supplement that helps support steady blood flow and vascular function, thanks to the key ingredient L-arginine and NOW's strict quality standards. The key ingredient, L-arginine, supports nitric oxide production for healthy blood flow. NOW Foods backs this with facilities compliant with current Good Manufacturing Practice, vegan sourcing, and clear labeling you can really trust.

Benefits & Features:

• Supports steady blood flow and vascular function.
• L-arginine helps support nitric oxide production for better endothelial function and exercise comfort.
• Vegan friendly and non-GMO, with clear labeling and allergen free formulation.
• Manufactured in facilities compliant with current Good Manufacturing Practice with in-house testing to maintain purity and consistency.
• Dosing is straightforward with twice daily use, designed to fit into most daily routines and help you sustain nitric oxide levels across workouts and throughout the day.

NOW Foods has earned a long standing reputation for quality and transparency, and LArginine reflects that heritage. The product uses pharmaceutical-grade L-arginine, is vegan-friendly, non-GMO, and free from common allergens, with clear labeling for peace of mind. NOW Foods ships from facilities that run rigorous in-house testing and adhere to strict quality controls, helping you trust what you’re taking. In short, a straightforward, dependable choice for daily wellness and active living, quickly and easily fitting into busy days.

Other Ingredients - Hypromellose (cellulose capsule), Stearic Acid (vegetable source) and Silicon Dioxide.
Free From - Wheat, Dairy, Egg, Halal, Kosher, Gluten, non-GMO, Nut, Soy, Fish, Shellfish and suitable for Vegan/Vegetarians

• GTIN: 733739000309
• Manufacturer: Now Foods
• Size: 500 mg 100 Capsules
• Categories: Arginine SupplementsNew ArrivalsNOW 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.

Consume 2 capsules two times a day as required. Ingest between meals or before sleep with a minimum of 8 oz. of water or juice to aid absorption.

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

The Active Ingredient Is: L-Arginine

L-Arginine is an amino acid that serves as a precursor to nitric oxide, supporting normal vascular function. This pharmaceutical-grade form is vegan-friendly, non-GMO, and free from common allergens.

Form and source: L-Arginine is provided as a pure amino acid in a vegan, allergen-free presentation suitable for a wide range of diets.

What Does L-Arginine Do?

L-Arginine plays a role in nitric oxide production, which helps maintain normal blood flow and vascular function. Research suggests it can support endothelial function and related vascular processes through nitric oxide availability.

NHS guidance notes the importance of nitric oxide in vascular health, emphasising the role of its precursors in normal physiological function.

Food supplements should not be used as a substitute for a varied diet. Do not exceed the stated dosage. Store in a cool, dry place, protected from light and heat.

L-ArginineFree-Form: 1 g

NOW Foods is Welzo’s chosen partner for L-Arginine because this brand demonstrates a proven track record of manufacturing excellence and transparency that aligns with our rigorous standards. The company operates cGMP-compliant facilities and conducts in-house quality testing, reinforcing consistent purity and safety across batches. Their commitment to clear labeling, non-GMO verification, and allergen-free protocols helps ensure the product is suitable for a broad range of customers.

Our medical experts evaluated NOW Foods for reputation, heritage, and manufacturing philosophy, and their longstanding presence in the supplement industry stood out for reliability and breadth of experience. This brand’s emphasis on pharmaceutical-grade ingredients and ethical sourcing supports a trustworthy supply chain, which you can verify through our quality resources on ingredient standards how we verify ingredient quality.

This brand is well suited to L-Arginine, offering an evidence-aligned dosage approach and verifiable quality controls, which impressed our team during the Welzo vetting process. Learn more about our experts at our team of medical experts.