Natrol L-Arginine is an amino acid supplement that supports circulation and blood flow, making workouts feel smoother and daily energy. The key ingredient, L-Arginine, acts as a direct precursor to nitric oxide, encouraging vasodilation and better blood flow, which can boost exercise performance. Natrol is a trusted brand with a long history of wellness supplements, focused on quality and straightforward, single-ingredient support. This is easy to take daily. It helps you train consistently.

Available Sizes & Variants:

90 tablets Natrol L-Arginine - convenient daily supply for steady dosing.

Benefits & Features:

• Better blood flow.
• Star ingredient L-Arginine acts as a direct precursor to nitric oxide, promoting vasodilation.
• Dosed across the day to fit into busy schedules, easily.
• Single ingredient formula keeps things simple and easy to track daily.
• Clinically studied dosing supports daily circulation and athletic performance with a simple tablet count that fits into most routines without fuss, even on busy days.

Natrol's L-Arginine line is built for daily use with a straightforward, single ingredient approach that keeps things transparent. L-Arginine is a direct precursor to nitric oxide, promoting vasodilation and better blood flow, which can support exercise performance. Clinically studied doses around 3,000 mg per day are common, a level this product mirrors. Manufactured in facilities complying with current good manufacturing practice standards, Natrol aims for consistent quality you can trust. For those seeking health supplements to support active lifestyles, this range complements routines associated with liver king style training and daily wellness goals.

Other Ingredients - Microcrystalline cellulose, hypromellose, stearic acid, contains 2% of less of (cellulose gum, glycerin, magnesium stearate, methylcellulose, silicon dioxide.
Free From - Milk, egg, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans and sesame.

• GTIN: 47469052348
• Manufacturer: Natrol
• Categories: Arginine SupplementsBest SellersNatrol Supplements & VitaminsNew ArrivalsSubscribe & Save Products
• 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 five tablets each day alongside food.

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 functions as a direct precursor to nitric oxide, a signalling molecule involved in vessel widening and enhanced blood flow. This supports normal circulatory function and athletic performance by promoting tissue perfusion. This form is supplied as a standard amino acid supplement, commonly used to support vascular function and endurance through its role in nitric oxide synthesis.

What Does L-Arginine Do?

L-Arginine plays a role in the production of nitric oxide, which can promote vasodilation and improved blood flow. This mechanism supports cardiovascular health and exercise performance by aiding tissue perfusion and oxygen delivery, in line with normal physiological functions.

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

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.

Natrol is our chosen partner for L-Arginine because this brand demonstrates a clear focus on straightforward, single-ingredient formulations that help maintain transparency around dosage and potency. This aligns with Welzo’s commitment to high-quality delivery and traceable nutrition, making Natrol a natural fit for customers seeking a pure L-Arginine supplement experience. Our medical team evaluates every brand against our rigorous criteria, ensuring alignment with safety, quality and patient-centric service. You can learn more about this vetting approach from our expert team of doctors, nurses, and nutritionists and our ongoing commitment to quality through our quality certification process.

Natrol’s product is specifically chosen for its clean, easily understood dosing profile, which supports Welzo’s product-fit requirements for vascular-support focused supplements. This brand was evaluated by our expert team of doctors, nurses, and nutritionists for compliance with our quality certification process, ensuring it meets Welzo’s standards for UK customers.