Diet Fuel Ultralean helps with weight management by promoting lean muscle retention and appetite control, thanks to a really high protein, high fibre blend. USN Nutrition has a long history in sports nutrition, focused on quality and making workouts and weight goals easier to reach.

Benefits & Features:

• Aids weight management with high protein and fibre to help you feel satisfied and less likely to snack between meals.
• Protein and fibre help you feel full longer, cutting down snacking between meals.
• Fortified with vitamins and minerals to back daily nutrition while you diet, a sensible diet supplement.
• Active ingredients include Garcinia cambogia, L-carnitine and chromium picolinate, which, when paired with a balanced diet, may help support energy management and appetite control through a busy day.
• Low glycemic energy with a lactose-tolerant formula and gluten free ingredients helps steady energy without spikes.

USN Diet Fuel Ultralean stands out in the meal replacement arena thanks to its balanced protein and fibre blend that helps support weight management and lean muscle. It also delivers a full vitamin and mineral profile to keep daily nutrition on track when calories are lower. Rooted in USN’s long heritage in sports nutrition, this diet supplement mirrors the brand’s commitment to quality. For those comparing weight loss pills, it’s a practical, tasty option that pairs well with oxyshred.

Whey protein concentrate (36%), Maltodextrin, Soy protein isolate, Inulin, Calcium caseinate, Cocoa powder (only in chocolate flavour), Fructose, Sunflower oil, Milk protein isolate (92% micellar casein), Potassium citrate, Garcinia cambogia (1.8%), Flavouring, Rice starch, Stabilisers (Guar & Xanthan gum), Colour [Red beet powder (only in strawberry flavour)], Magnesium oxide, Non-nutritive sweetener (Sucralose), Ascorbic acid, Iron fumarate, D-Alpha-tocopherol acetate, Zinc citrate, Nicotinamide, Copper bisglycinate, Tolerase™L (pH-stable lactase), Manganese ascorbate, D-Calcium pantothenate, Vitamin A, palmitate, Biotin, Cyanocobalamin, Cholecalcipherol, Pyridoxine HCl, Riboflavin, Thiamin HCl, Chromium picolinate, Potassium iodate, Folic acid (Pteroylmonoglutamic acid), Sodium selenate.Allergens: Cow’s Milk and Soy. Manufactured in a facility that also processes egg. Ingredients may also contain traces of tree nuts, peanuts and crustaceans.

• GTIN: 6009644650323
• Manufacturer: USN
• Size: Vanilla / 1kg
• Categories: Best SellersBodybuilding SupplementsNew ArrivalsNew In Supplements & VitaminsSports SupplementsSubscribe & Save Products
• 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 one serving (providing 200 kcal) as part of a balanced meal. Mix thoroughly. Contains 25g of protein to support muscle maintenance, 7.4g of fiber for digestive health, and only 4.1g of fat (1.4g saturates). Each portion delivers 12g of carbohydrates (2.2g sugars). Salt content: 0.84g. Monitor your daily energy intake: 841 kJ per serving.

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

The Active Ingredient Is: Whey Protein

Whey protein is a high-quality dairy protein containing all essential amino acids necessary for normal body functions.

This form is commonly sourced from milk and is used in meal replacements to support satiety and lean muscle maintenance as part of a balanced diet.

What Does Whey Protein Do?

Whey protein participates in supporting muscle mass during energy restriction and helps maintain fullness, contributing to appetite control in line with EFSA guidance. UK health guidance also emphasises the role of adequate protein in a balanced diet.

Evidence suggests protein-rich meals can support weight management when combined with overall energy balance.

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

ALLERGY ALERT:
This product contains milk and soya ingredients.

Here’s why USN Diet Fuel Ultralean made Welzo selection. USN's a well established name in sports nutrition, widely recognised for its thorough meal replacement formulations that blend high‑quality protein with fibre and a broad vitamin and mineral profile. We decided on USN for this partnership because the brand consistently delivers a nutritionally balanced base meant to support daily nourishment as part of a calorie‑controlled plan, with a formula that is vegetarian‑friendly and gluten‑free. Our review emphasised the product’s solid protein blend, fibre content and low‑glycemic approach, all of which align with Welzo’s commitment to transparent, evidence‑based supplementation. This brand was reviewed by our team of medical experts for alignment with our quality assurance criteria. The outcome is a collaboration built on trusted manufacturing philosophy [that] underpin s a shared emphasis on safety, accuracy and user‑centred nutrition.