USN Diet Fuel RTD is a protein packed drink for busy days, helping you curb hunger and support lean muscle on the go. [It’s built for daily hustle and quick refuelling, so you don’t have to snack mindlessly.]

Available Sizes & Variants:

310ml RTD – convenient ready to drink format for busy days

Benefits & Features:

• Protein fuels fullness, helping you stay satisfied between meals.
• Convenience of a ready to drink format fits into busy schedules, making weight management easier.
• A blend of high quality protein with fibre helps regulate appetite, supporting steady energy and reducing cravings during calorie controlled phases, so you can stick to your plan more easily.
• Low sugar content helps you stay on track while still enjoying the flavour.
• Brand's commitment to quality standards and transparency sets it apart in a crowded market.

USN Diet Fuel RTD sits alongside a long standing line of USN nutrition products known for practical weight management. The brand champions high protein, low sugar options that fit busy lives, with meals you can grab and go. While exact RTD ingredient dosages aren't published, the formula's emphasis on protein and fibre supports fullness and lean muscle maintenance during calorie controlled phases. It’s a straightforward, trusted option when you’re aiming for consistency. For those seeking convenient meal options, this product also functions well as meal replacement shakes or as a quick protein shakes choice when time is tight.

Skimmed milk, Water, Milk protein, Flavouring, Stabiliser: carrageenan, Acidity regulator: trisodium citrate, Colour: beta carotene, Sweetener: sucralose. ALLERGENS: For allergens, see ingredients in bold.

• GTIN: 6009544927112
• Manufacturer: USN
• Size: Vanilla
• Categories: Bodybuilding SupplementsNew ArrivalsNew In Supplements & VitaminsSports 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.

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

The Active Ingredient Is: Protein

Protein is a macronutrient providing amino acids essential for tissue maintenance and normal metabolic function.

This form is found in high-protein meal replacement beverages and supports satiety and lean muscle preservation as part of balanced nutrition.

What Does Protein Do?

Protein contributes to satiety and supports weight management by helping to control hunger, and it participates in keeping lean muscle during calorie-controlled periods, with evidence linking high-protein intake to these outcomes.

Dr. Moon of Seoul National University found that high-protein diets reduce body weight and fat mass while maintaining fat-free mass, supporting the role of protein in weight management strategies.

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

Protein:25g ,Carbohydrates:11g

USN is recognised for delivering high-protein meal replacements designed for weight management and convenient, on-the-go nutrition. This brand’s focus on protein-packed, low-sugar options aligns with our emphasis on providing clear, results-oriented choices for customers seeking practical support with balance and satiety. Our evaluation process, carried out by our team of medical experts, centres on a supplier’s heritage, product integrity and manufacturing philosophy, and it confidently highlights USN’s alignment with those criteria. We also rely on our rigorous testing protocols to ensure consistency and safety, reinforcing the trust customers place in this brand.

This product serves as a high-protein meal replacement option that complements weight-management goals by offering substantial protein per serving, while remaining convenient for busy lifestyles. The brand’s established focus on protein-forward nutrition makes USN Diet Fuel RTD a strong fit for this supplement category, reflecting Welzo’s commitment to credible, science-led partnerships.