REIGN Total Body Fuel is a fizzy energy drink that powers workouts with zero sugar and a mix of caffeine, BCAAs and vitamins to elevate focus and performance. From a brand that prioritises performance and openness, it’s free from gluten, common allergens and GMOs. Caffeine at a measured level supports alertness, and BCAAs, L-arginine and B vitamins help your body stay energised through sessions.

Available Sizes & Variants:

12x500ml – convenient multipack ideal for gym bags and everyday use.

Benefits & Features:

• Zero sugar and zero calories mean clean energy.
• Caffeine powers alertness and endurance to help you train harder.
• BCAAs in the blend may delay fatigue and support muscle recovery during tougher sessions.
• L arginine supports nitric oxide production, aiding blood flow.
• REIGN's clean formula and transparent ingredients mean you get consistent energy with gluten free, allergen free and GMO free sourcing, plus strict quality controls for reliability.

REIGN Total Body Fuel blends caffeine, BCAAs, L arginine and B vitamins into a clean, gluten free formula designed for consistent energy during training. The star ingredient caffeine is a trusted energy booster that helps you stay alert and push harder in workouts. The brand emphasises transparency and quality, with GMO free, gluten free and allergen free ingredients and careful production standards. As Dr. Grgic of the University of Zagreb notes, caffeine at this level can improve alertness and endurance.

Caffeine, Intense sweeteners, Added preservatives

• GTIN: 05060608741984
• Manufacturer: Reign
• Size: Razzle Berry
• Categories: Bodybuilding SupplementsCHECKOUT UPSELLNew ArrivalsNew In Supplements & Vitamins
• 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.

For best results, consume this 3-calorie serving which provides 13 kJ of energy. This portion contains 0.7 g of carbohydrates with zero sugars, 0.2 g of protein, and 0.12 g of salt. Incorporate into your balanced diet to maintain your nutritional goals.

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

The Active Ingredient Is: Caffeine

Caffeine is a natural stimulant that supports mental alertness and perceived energy during activity. It is a central nervous system stimulant commonly used in beverages and supplements to help combat fatigue and maintain focus.

This form is a widely used stimulant that can be consumed in various products to support acute energy needs and alertness during physical effort.

What Does Caffeine Do?

Caffeine aids in increasing alertness and reaction time and may support endurance during exercise at typical performance doses.

Dr. Grgic of the University found that a 200 mg dose improves alertness and endurance, aligning with EFSA and NHS interpretations of caffeine’s role in maintaining energy during activity.

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

REIGN is the brand we selected for Total Body Fuel because its focus on performance and transparency aligns with Welzo’s standards for trusted sports nutrition. This brand stands out in our evaluation for consistently clear product purpose and a commitment to ingredients free from gluten, common allergens and GMOs, which resonates with our quality criteria. Our medical team, Welzo's healthcare professionals, reviewed REIGN for its formulation approach and its emphasis on energy delivery alongside BCAAs and vitamins in a zero sugar, zero calorie package. This brand is recognised for a performance-oriented identity, which differentiates it from broader, more general energy drink ranges. The selection decision reflects our aim to partner with manufacturers who prioritise product integrity and consumer safety, validated through our internal vetting framework and our quality certification process.

In choosing REIGN, we emphasise the brand’s alignment with our standards for testing and labelling accuracy, while ensuring suitability for this supplement type. This collaboration is reinforced by Welzo’s team and quality criteria, confirming strong UK compliance and safety practices.