Next day delivery before 3pm
Free next day delivery as standard, on orders over £150 before 3pm.

USN Diet Fuel Ultralean is a premium, high-protein meal replacement shake made for sustainable weight management and lean muscle maintenance. The 2kg format offers convenient, longer-term support for anyone looking to stay consistent with their diet and performance goals.
With a blend of fast and slow-release proteins, Diet Fuel Ultralean supports recovery and sustained energy while providing full-spectrum nutritional balance. Designed to make dieting easier without compromising on taste or results.
USAGE
Add 2 scoops (54g) to 250–300ml of cold water. Mix thoroughly in a blender or shaker for about 30 seconds. Have 1–2 servings as meal replacements daily alongside a calorie-restricted diet.
NUTRITIONALS (Based on Vanilla)
| Nutrient | Per Serving (55g) | %RI* |
|---|---|---|
| Main Nutrition | ||
| Energy | 860kJ / 204kcal | 10% |
| Fat | 3.6g | 5% |
| – of which Saturates | 1.2g | 6% |
| Carbohydrate | 17g | 6% |
| – of which Sugars | 3.2g | 4% |
| Fibre | 2.2g | – |
| Protein | 25g | 51% |
| Salt | 0.76g | 13% |
| Vitamins & Minerals | ||
| Vitamin A | 248µg | 31% |
| Vitamin D | 1.7µg | 33% |
| Vitamin E | 4.1mg | 34% |
| Vitamin K | 23µg | 31% |
| Vitamin C | 25mg | 31% |
| Thiamin (B1) | 0.37mg | 34% |
| Riboflavin (B2) | 0.50mg | 35% |
| Niacin (B3) | 5.5mg | 34% |
| Vitamin B6 | 0.50mg | 35% |
| Folic Acid | 63µg | 31% |
| Vitamin B12 | 0.88µg | 35% |
| Biotin | 15µg | 31% |
| Pantothenic Acid | 1.9mg | 32% |
| Potassium | 544mg | 27% |
| Calcium | 505mg | 63% |
| Phosphorus | 274mg | 39% |
| Magnesium | 134mg | 36% |
| Iron | 5.9mg | 41% |
| Zinc | 3.5mg | 35% |
| Copper | 0.39mg | 40% |
| Manganese | 0.61mg | 31% |
| Selenium | 21µg | 38% |
| Chromium | 35µg | 87% |
| Iodine | 48µg | 32% |
| Other Nutrients | ||
| Linoleic Acid | 1000mg | – |
| α-Linolenic Acid | 100mg | – |
*Reference intake of an average adult (8400kJ / 2000kcal)
INGREDIENTS
Protein blend [whey protein concentrate (milk), soya protein isolate, milk protein isolate, whey protein isolate (milk) (emulsifier: sunflower lecithin), hydrolysed whey protein isolate (milk) (emulsifier: sunflower lecithin)], maltodextrin, polydextrose, fat reduced cocoa powder, fat powder (refined soya bean oil, glucose syrup, milk protein, stabiliser (pentasodium triphosphate), free flowing agent (silicium dioxide), natural flavour), inulin, tripotassium citrate, milk minerals complex, thickeners (guar gum, xanthan gum), flavouring, sodium chloride, stabiliser (cellulose gum), creamer [high oleic sunflower oil, glucose syrup, milk protein, free flowing agent (silicium dioxide)], magnesium oxide, high amylose maize starch, sweetener (sucralose), vitamin & mineral blend: chromium picolinate, ascorbic acid, ferrous fumarate, D-alpha tocopherol, zinc citrate, potassium iodate, folic acid, nicotinamide, manganese ascorbate, sodium selenite, copper bisglycinate, D-calcium pantothenate, retinyl palmitate, cyanocobalamin, pyridoxine hydrochloride, D-biotin, cholecalciferol, thiamine hydrochloride, vitamin K1 (riboflavin, phylloquinon), Tolerase™ L (pH-stable lactase).
ALLERGEN STATEMENT
May contain / Produced in a facility that also processes milk, soy, gluten, eggs, fish, crustaceans, sulphite and nuts.