USN Diet Fuel Ultralean is a premium, high-protein meal replacement shake scientifically formulated to support weight management, lean muscle maintenance, and daily satiety. Designed for active individuals, gym-goers, and anyone following a calorie-controlled nutrition plan, this nutrient-dense formula delivers a complete multi-source protein blend, low glycaemic index carbohydrates, essential vitamins, and targeted weight loss nutrients to keep you full and energised throughout the day.

Key Benefits & Features

• High-Quality Protein Blend: Provides 25g of multi-stage release protein per serving to support lean muscle preservation and enhance fullness.

• Targeted Thermogenic Support: Formulated with Garcinia Cambogia, CLA, and L-Carnitine to support healthy lipid metabolism and fat utilisation.

• Low Sugar & Low GI Carbs: Delivers sustained energy without sharp blood sugar spikes, helping prevent mid-day energy crashes and cravings.

• High Dietary Fibre: Enriched with soluble and prebiotic fibres to support digestive health, improve gut transit, and promote long-lasting satiety.

• Comprehensive Vitamin & Mineral Matrix: Packed with essential micronutrients to fill nutritional gaps while eating in a calorie deficit.

How It Works

USN Diet Fuel Ultralean functions as a convenient, nutrient-complete meal replacement that simplifies maintaining a calorie deficit without sacrificing vital nutrition. The multi-source protein matrix—combining whey protein isolate, whey concentrate, and calcium caseinate—ensures an immediate and sustained release of amino acids into the bloodstream, protecting hard-earned lean muscle tissue during periods of dieting.

In addition to high protein and fibre for appetite control, the formula features active metabolic co-factors including L-Carnitine and Garcinia Cambogia (standardised for Hydroxycitric Acid). L-Carnitine aids the transport of long-chain fatty acids into cellular mitochondria where they can be converted into usable energy, while dietary fibre slows gastrointestinal transit to curb hunger and keep you feeling full for hours.

Recommended Use

• Serving Size: Mix 2 rounded scoops (approx. 45g–50g) with 250–300ml of cold water or unsweetened almond milk in a shaker bottle.

• Timing: Consume 1–2 times daily as a convenient meal replacement shake for breakfast or lunch, or enjoy mid-morning or mid-afternoon between whole food meals to manage appetite.

• Shaking Tip: Shake vigorously for 20–30 seconds for a smooth, creamy texture.

Container Size: 900g
Serving Size: 2 Scoops (45g) 
Servings Per Container: 20

All orders $60 and over receive Free* Shipping Nationwide 

Final pick up each day is at 3.45pm Monday to Friday. 

Estimated Delivery Times*:

Auckland and North Island – Overnight

*During sale periods, please allow an additional 1–2 business days for dispatch due to high order volumes.

However many Auckland orders will be delivered the same day depending on what time the order is placed

South Island – Overnight (For larger parcels allow 2 business days)

Same Day/Evening Express Shipping upgrade available at checkout for select suburbs*

Click here to view the full Shipping Details and Returns Policy.