GAT Nitraflex Advanced

Citrulline Malate, L-Arginine Malate, L-Arginine Alpha-Ketoglutarate, Beta-Alanine, Caffeine Anhydrous (325mg), Nitrosigine (1000mg), Calcium Fructoborate, L-Tyrosine, DMAE Bitartrate, Theanine, Resveratrol, Pterostilbene, Natural and Artificial Flavors, Citric Acid, Silicon Dioxide, Acesulfame Potassium, Sucralose, FD&C Blue #1.

United Kingdom & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched 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 14 days in the same original and unopened packaging. Subject to T&C's.

Welzo is a UK-based health platform. Orders ship from the UK.

Begin by assessing your tolerance with half a serving of NITRAFLEX ADVANCED mixed with 5 oz of cold water. Consume within 30 minutes before working out. Depending on tolerance, mix one (1) serving (1 scoop) of NITRAFLEX ADVANCED with 8-10 oz of cold water and consume within 30 minutes before working out. Do not take within 6 hours of bedtime. Store in a cool, dry place. Keep out of reach of children. Not recommended for use if pregnant or nursing. If you experience adverse reactions, stop use immediately and consult your healthcare professional.

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

Caffeine acts as a stimulant that fuels mental energy and alertness, helping to optimise focus during tasks demanding concentration and stamina. This form is a pure anhydrous caffeine extract, designed for rapid uptake and use during workouts.

This formulation uses a clean stimulant form to deliver quick-and-ready energy support for sessions.

What Does Caffeine Anhydrous Do?

Caffeine participates in boosting energy and alertness and plays a role in supporting performance during physical activity, with effects discussed in athletic and dietary guidelines. This information sits alongside high level reviews of caffeine's effects on exercise performance.

Dr. Goldstein from Harvard University found that caffeine reliably boosts energy, alertness, and exercise performance, backing the physiological role described above.

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

GAT Sport brings a science‑driven, athlete‑focused stance to the market and GAT Sport Nitraflex Advanced slots in as a natural fit for Welzo. This brand has built a solid reputation as a leading player in the pre‑workout category with over 86 million doses sold worldwide, reflecting broad consumer trust and a proven track record in performance‑driven formulations.

GAT Sport is recognised for innovative, athlete‑driven products that evolve with feedback from real users, placing quality and efficacy at the forefront. This aligns with our commitment to rigorous product curation and safety, evaluated by Welzo's healthcare professionals for compliance with our ingredient quality and purity standards.

Brand‑level quality is reinforced by their stated adherence to modern manufacturing standards and a science‑backed dosing philosophy, ensuring the formulation remains focused on delivering dependable energy, focus and pumps for demanding training sessions. This makes GAT Sport particularly well suited to Nitraflex Advanced. Welzo selected this brand because of its credibility, ongoing innovation and alignment with our evaluation criteria for quality, safety and product fit.