Natrol L-Arginine is a daily supplement that helps support healthy blood flow and stamina, giving you a solid hit of the star amino acid L-Arginine from a brand that’s known for quality.

Available Sizes & Variants:

90 tablets – Daily capsules for convenient everyday use.

Benefits & Features:

• Supports healthy blood flow for daily performance.
• Designed for everyday use, these capsules slot easily into busy schedules, supporting cardiovascular health and exercise capacity as you train or go about the day.
• Natrol's decades of experience mean consistent quality and trusted reliability across supplements.
• Vegetarian formula free from common allergens supports inclusive use by many.
• L-Arginine supports nitric oxide production, helping blood vessels relax to improve blood flow.

Natrol brings over four decades of experience to these supplements. The formula is vegetarian and free from common allergens, crafted in facilities that meet industry safety and quality standards. The star ingredient, L-Arginine, is the key to supporting blood flow and stamina, while reliable sourcing and rigorous quality checks help you feel confident in daily use. It fits neatly into your fitness routines and everyday wellness journey.

Microcrystalline Cellulose, Hypromellose, Stearic Acid, Silicon Dioxide, Cellulose Gum, Magnesium Stearate, Methylcellulose, Dicalcium Phosphate, Glycerin

• GTIN: 47469052348
• Manufacturer: Natrol
• Categories: ArginineL-ArginineNatrol Supplements & VitaminsNitric Oxide Boosters
• 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 1 tablet of Natrol L-Arginine 3000mg daily, preferably with food to enhance absorption. Store in a cool, dry place away from direct sunlight. Keep out of reach of children. Consult a healthcare professional before use if you are pregnant, nursing, taking medication, or have a medical condition.

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

The Active Ingredient Is: L-Arginine (Amino Acid)

L-Arginine is an amino acid involved in normal body functions and is supplied here as pure L-Arginine. This presentation is suitable for a vegetarian diet and aligns with typical amino acid supplement formats.

Source information indicates the ingredient is a single, purified amino acid used to support nutrient delivery and vascular-related processes. This formula also includes minor excipients that aid in product stability and appearance, while the primary ingredient remains L-Arginine.

What Does L-Arginine Do?

L-Arginine helps increase nitric oxide production, which supports normal blood flow and oxygen delivery to tissues. It plays a role in vascular function and energy metabolism related to everyday physical performance and immune-related processes.

This information aligns with scientific discussions of L-Arginine’s mechanism and its involvement in nitric oxide-mediated pathways that contribute to nutrient delivery and tissue oxygenation.

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

Vitamin B6Pyridoxine Hydrochloride: 10 mg, Folate: 333 mcg DFE, Folic Acid: 200 mcg, Vitamin B12Cyanocobalamin: 50 mcg, L-Arginine: 3000 mg

Natrol stands out for quality‑driven manufacturing and a long‑standing reputation in amino acid and men’s health products, making it a natural partner for Welzo’s supplement range. This brand has over four decades of experience and is widely recognised for consistent quality and consumer trust across global retail channels.

The manufacturer’s commitment to safety and potency is reflected in facilities that meet recognised industry standards for safety and quality, with routine quality assurance and batch testing as core practices. Natrol’s robust manufacturing philosophy supports purity and reliability, aligned with Welzo’s emphasis on rigorous standards. Our evaluation of Natrol included how the brand maintains a track record of quality in everyday consumer supplements, and it is routinely discussed within leading market offerings.

This combination of brand credibility, strong manufacturing practices, and broad market presence makes Natrol the right fit for L-Arginine, ensuring product integrity while aligning with our quality certification process. This brand evaluation is conducted by our medical team and supported by our quality certification process to uphold Welzo’s high standards.