From Foods Arginine and Ornithine is a nutritional supplement that helps nitric oxide production to boost blood flow and exercise performance. The two key amino acids are L-Arginine and L-Ornithine, delivering help for energy and protein metabolism while promoting recovery and muscle function. With GMP quality, allergen free production and trusted manufacturing in the United States, NOW Foods brings reliability to your daily routine.

Available Sizes & Variants:

100 capsules - convenient daily supply for ongoing use.

Benefits & Features:

• Supports nitric oxide production for better blood flow.
• Promotes endurance and quicker recovery by aiding nutrient delivery to working muscles during training and post exercise, helping you push harder and feel steadier overall.
• Ornithine adds support for reduced fatigue after long workouts, helping sustain performance day after day.
• The blend is designed for daily use with a simple two capsule serving that fits into most routines.
• Manufactured in the United States with Good Manufacturing Practice facilities and verified for allergen safety, giving you confidence in purity and quality.

Two capsule servings deliver a clean dose of arginine and ornithine, supporting nitric oxide production and helping with urea detox to keep fatigue at bay. The star amino acids are bolstering energy, endurance and quicker recovery, making this a go-to for athletes and active folks. NOW Foods has a long standing history of quality, producing in the USA to strict standards and earning Informed-Sport and Informed-Choice certifications, along with kosher and non-GMO status, ensuring purity you can trust.

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

• GTIN: 733739000408
• Manufacturer: Now Foods
• Categories: Arginine SupplementsCHECKOUT UPSELLNew ArrivalsNOW FoodsOrnithine Supplements
• 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 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.