HR Labs Fever delivers a high intensity thermogenic blend to boost energy and accelerate fat metabolism for more effective workouts and daily momentum. The star ingredients include ForsLean and Paradoxine, with quality manufacturing in the UK. HR Labs is a premium brand known for transparent labelling and serious sports nutrition expertise. Fever 40 is designed for adults looking to support their weight management goals while staying energised throughout the day.

Available Sizes & Variants:

75 capsules – standard daily bottle size for convenient dosing.

Benefits & Features:

• Boosts energy for workouts.
• Supports fat oxidation and metabolic rate.
• ForsLean supports lean body mass, Paradoxine boosts energy expenditure, and caffeine supports fat oxidation, while the overall blend promotes focus and appetite management.
• Cycle use with 5 days on, 2 days off for up to eight weeks to manage tolerance.
• AstraGin and Bioperine enhance nutrient absorption for better results.

HR Labs Fever is manufactured in the UK by a premium supplier known for transparent labelling and high potency blends. The formula combines branded actives like ForsLean (12% forskolin) and Paradoxine with Pro GBB, AstraGin, Bioperine and Cocoabuterol to optimise thermogenesis and fat oxidation. With clear dosing and a focus on quality, this product sits at the top of UK sports nutrition for enthusiasts seeking a purposeful burn and steady energy.

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 1-2 capsules of HR Labs Fever 40 daily, preferably with food to enhance absorption. Store in a cool, dry place, away from direct sunlight and moisture. Keep out of reach of children. Do not exceed the recommended daily dose. If you are pregnant, breastfeeding, taking any prescribed medication, or have any medical condition, consult a healthcare professional before use.

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

The Essential Ingredient Is: Caffeine Anhydrous

Caffeine anhydrous is a central stimulant and natural compound involved in boosting energy-yielding processes and alertness. It is a single nutrient used to support metabolic activity and focus in active individuals.

This form is a highly concentrated, dry extract of caffeine, commonly sourced from coffee or tea plants and used for its rapid onset and bioavailability.

What Does Caffeine Anhydrous Do?

Caffeine Anhydrous supports increased metabolic rate and fat oxidation during activity, with effects observed in healthy adults. Dr. Astrup of the University of Copenhagen found that caffeine can influence energy expenditure and fat metabolism, aligning with EFSA guidance on safe daily intake levels.

The combination with other ingredients in this blend may enhance absorption and cognitive focus, while remaining within normal physiological function expectations.

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

HR Labs is a trusted UK maker with a track record of clear labelling, quality blends and a forward thinking approach to sports nutrition. This brand’s commitment to dosage integrity and synergistic blends fits Welzo’s expectation for reliable, workmanship led supplementation. The UK production site grounds our choice in strong regulatory compatibility, with adherence to UK Food Standards Agency expectations and EU supplement rules baked into their practice.

HR Labs Fever 40 is a product that sits well within Welzo’s UK market focus, delivering a high quality, technically engineered blend that uses validated branded ingredients to support energy and metabolism in a fitness context. Our medical team and product specialists checked this brand for consistency, safety and manufacturing discipline, and confirmed its alignment with Welzo’s quality criteria through our internal assessment process. For reassurance on our standards, learn about our team and our quality certification process through the Welzo pages Welzo's healthcare professionals and our quality certification process.

Ultimately, this partnership reflects HR Labs' established reputation, product integrity and UK based production, reinforcing Welzo’s commitment to trusted, highly regulated supplements for the UK market.