BioTechUSA L-Arginine is a amino acid supplement that helps you boost blood flow and endurance, powered by L-arginine and backed by BioTechUSA's trusted quality standards. Launched with a straightforward formula in a gelatin capsule, it provides focused support with few additives. Quality tested and made by BioTechUSA to meet strict safety standards.

Benefits & Features:

• Supports improved blood flow for better muscle delivery.
• A straightforward single ingredient formula for l arginine supports consistent intake without complex dosing
• For athletes aiming to push harder, the key active ingredient supports nitric oxide production, promoting vasodilation and improved oxygen delivery to working muscles during tough workouts and long sessions
• Perfect aminos for high intensity days supporting steady blood flow and muscle delivery
• BioTechUSA is known for safe ingredients and reliable manufacturing

BioTechUSA's heritage shines through in L-Arginine, a focused, no-nonsense supplement designed for athletes who want dependable nitric oxide support [trusted by athletes]. The product uses L-Arginine hydrochloride to deliver the key active ingredient efficiently, and it’s produced in facilities that prioritise safety, allergen controls, and transparent labelling. Fans value its simplicity and clear, targeted benefits, making it a trusted choice in a crowded market of sports supplements.

L-Arginine hydrochloride, of which L-Arginine

• GTIN: 5999076251520
• Manufacturer: BioTechUSA
• Size: 300 grams
• Categories: ArginineBioTechUSA SupplementsL-ArginineNitric Oxide BoostersSports 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.

Mix 2 g (half a measuring spoon = half a tablespoon) of L-Arginine powder with 400 ml of water or a soft drink. Take two servings daily, with one serving ideally consumed 30 minutes before training. On rest days, consume one serving before bedtime. Store in a cool, dry place, away from direct sunlight and moisture. Keep out of reach of children. Food supplements should not replace a balanced diet and healthy lifestyle. Not recommended for pregnant or nursing women, or individuals with blood pressure issues. Do not exceed the recommended daily allowance.

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

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: L-Arginine

L-Arginine is an amino acid that helps with normal protein production and tissue health. It is provided here as the hydrochloride form, a stable salt that helps deliver the amino acid in a straightforward capsule setup.

What Does L-Arginine Do?

L-Arginine acts as a precursor to nitric oxide, which helps blood vessels loosen and boosts blood flow. It helps support exercise performance and cardiovascular health by improving circulation and oxygen delivery to the muscles.

This product presents L-Arginine in a straightforward, single-ingredient format, with the main role being to support normal vascular function during activity. The mechanism centers on nitric oxide production, a normal physiological process that enables blood flow needed for daily movement and exercise.

This product isn't meant to diagnose, treat, cure, or prevent any disease.

BioTechUSA has built a solid reputation across Europe as a trusted sports nutrition maker, recognised for dependable manufacturing processes and a clear focus on product safety [which we tested thoroughly]. This heritage and industry standing align with Welzo’s aim to partner with brands that deliver consistent quality for active individuals, and it resonates with our standards for transparency and reliability, ensuring athletes and everyday users can rely on a straightforward, well‑constructed supplement like L-Arginine.

Their formulation approach emphasises simplicity and purity, with a single‑ingredient profile delivered in a gelatin capsule, which fits perfectly with the needs of this product type, offering targeted support with minimal additives while keeping clear ingredient sourcing practices. The brand’s established market presence and consumer trust set BioTechUSA apart from many competitors, reinforcing our decision to collaborate with them for this supplement.

Welzo’s evaluation process, conducted by Welzo's healthcare professionals, and our commitment to our ingredient quality and purity standards underpin the selection, ensuring BioTechUSA meets our rigorous criteria for quality, safety and suitability for this product.