Now Foods Arginine & Citrulline is a plant-based amino acid blend crafted to back vascular health and muscle performance by offering nitric oxide precursors that help boost blood flow daily. Crafted by Now Foods, a trusted name in supplements, it sticks to strict quality controls and vegetarian, non GMO formulations. The capsules stay free from common allergens and are made in GMP sites to guarantee safety and consistency.

Available Sizes & Variants:

120 Veg Capsules - Vegetarian formula ideal for daily use.

Benefits & Features:

• Supports blood vessel health and vitality through nitric oxide support.
• Helps muscle metabolism and endurance via a balanced arginine and citrulline blend, with potential creatine synergy for performance.
• Supports ammonia detoxification through the urea cycle, helping recovery after tough sessions.
• Vegetarian, non GMO formula free of common allergens, making it suitable for many lifestyles.
• This item benefits from stringent quality checks and in-house testing, with careful sourcing and GMP compliant production practices to deliver dependable consistency you can trust.

NOW Foods has built a solid reputation for clean label supplements. This Arginine & Citrulline formula is vegetarian, non GMO and free from common allergens, matching modern dietary needs. The brand’s production runs in GMP facilities with strict in-house testing and third party scrutiny, helping to deliver reliable, steady quality. The key ingredients supply nitric oxide precursors that back vascular function and support protein metabolism, making daily use a simple, easy addition to a busy lifestyle.

Other Ingredients - Hypromellose (cellulose capsule), Stearic Acid (vegetable source) and Silicon Dioxide.
Free From - Wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients.

• GTIN: 733739000378
• Manufacturer: Now Foods
• Categories: Arginine SupplementsCitrulline SupplementsNew ArrivalsNitric Oxide Boosters SupplementsNOW FoodsStamina & Endurance 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.

Take one capsule twice a day.

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 participates in normal protein metabolism and serves as a precursor to nitric oxide, a molecule involved in vascular and metabolic processes.

This formula also includes L-Citrulline, which supports the production of arginine in the body and helps sustain nitric oxide levels for healthy blood flow and ammonia detoxification in the urea cycle.

What Does L-Arginine Do?

Scientific research suggests that L-Arginine contributes to nitric oxide production, supporting vascular function and muscle metabolism. It also supports the urea cycle, aiding ammonia detoxification during intense physical activity, in line with EFSA-informed understanding of amino acid roles.

These roles contribute to normal circulation and protein utilisation for everyday performance and recovery.

Dietary supplements are not a replacement for a balanced diet. Do not take more than the recommended amount. Keep in a cool, dry area away from light and heat. Ensure they are out of children's reach and view.

Why NOW Foods Arginine & Citrulline is Welzo Selected. This brand aligns with our strict criteria for reliable partners, underpinned by a long-standing commitment to quality, transparency and accessibility in supplements. NOW Foods is recognised for its long-standing reputation in the industry and its dedication to clean label practices, including non-GMO and vegetarian sourcing that supports broad consumer needs.

Our doctors and nutritionists reviewed NOW Foods’ manufacturing discipline, highlighting production in GMP facilities with rigorous in-house testing and third-party scrutiny. This rigorous approach is complemented by NOW Foods’ clear stance on allergen safety and dietary suitability, ensuring a dependable option for daily support. For how we ensure safety and purity, see our our ingredient quality and purity standards.

NOW Foods Arginine & Citrulline is particularly well suited to this blend, offering L-Arginine and L-Citrulline as nitric oxide precursors within a vegan, kosher formulation that supports protein metabolism and ammonia detoxification, while remaining true to clean label principles. Our team of medical experts are equipped to guide you through its use as part of Welzo’s careful brand evaluation process.