Now Foods Arginine & Ornithine 500/250 mg 100 Capsules

Other Ingredients - Hypromellose (cellulose capsule), Calcium citrate and Stearic acid (vegetable source).
Free From - Wheat, Corn, Dairy, Egg, Halal, Kosher, Gluten, Nut, Soy, Sesame, Fish, Shellfish, Suitable for Vegan/Vegetarians and non-GMO

United Kingdom & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched 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 14 days in the same original and unopened packaging. Subject to T&C's.

Welzo is a UK-based health platform. Orders ship from the UK.

Consume 2 capsules daily as required, ideally with juice or water on an empty stomach, prior to exercise or before sleep.

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

The Active Ingredient Is: L-Arginine

L-Arginine is a dietary amino acid that acts as a precursor to nitric oxide, a molecule involved in normal blood vessel function and blood flow. This form is provided as a free amino acid to support metabolism and athletic goals, and is paired with L-Ornithine in the formulation to refine its contribution to performance and recovery.

This combination is aligned with standard amino acid nutrition used to support muscle function and energy metabolism through normal physiological processes.

What Does L-Arginine Do?

L-Arginine plays a role in nitric oxide production, which supports normal blood flow and nutrient delivery to working muscles during activity. This mechanism supports endurance and muscle function as part of regular physiological pathways.

EFSA has emphasised the importance of normal vascular function in relation to amino acid metabolism, with nitric oxide production being a key contributor to this process.

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

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.

NOW Foods aligns with Welzo's rigorous partner criteria by combining strong brand credibility with a clear commitment to quality. This brand is renowned in the industry for its GMP‑certified US production and the consistency that comes from manufacturing in the USA, which resonates with our standard for reliability and traceability. This brand's certifications, including Informed-Sport and Informed-Choice, alongside GMP, Kosher and Non‑GMO status, underscore a proven safety and quality track record that matters to athletes and active individuals. This brand stands out from competitors through its demonstrated focus on purity and safety in a way that supports Welzo’s trust framework, which you can learn about through our medical team and how we verify ingredient quality.

This brand’s expertise in amino acid formulations, combined with its established manufacturing excellence, makes NOW Foods Arginine & Ornithine a particularly well‑fitted option for this supplement. The targeted blend supports energy and recovery pathways described in our research, reinforcing why this brand was selected over others in the market.