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5 Best Diet Shakes of 2026

Last Updated - 16/01/2026

1
Best Choice
22% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

USN
22% Off

USN Diet Fuel Ultralean Meal Replacement Shake Powder (Strawberry, 2kg - 36 Servings/Meals) Tasty High Protein Shake To Feel Full For Longer, Weight Control Powder, Drink Mix With 25g Protein

USN

£34.99

£45.00
(22% Off)

More Details
Main highlights
- YOUR NEW MORNING ROUTINE: Get your day off to the best possible start with these fantastic, and delicious, USN Meal Replacement Shakes. You don’t need to go without breakfast to help you lose weight - one quick shake and you are ready to take on the day!
- USN HIGH PROTEIN SHAKE POWDER: Use Diet Fuel Meal Replacement Shakes to help you reach your weight-loss goals. Perfect support for a low-calorie diet - a quick & easy way to get what your body needs, without the calories. Packed with 24 Vitamins & Minerals.
- ULTIMATE SPORTS NUTRITION: USN are at the forefront of sports nutrition research, making effective sports nutrition supplements for professional and non-professional athletes, pre or post workout. Science-driven nutrition so we can achieve together.
- HIGH PROTEIN MEAL REPLACEMENT: Protein is absolutely vital if you are looking to lose weight. When we take protein on board, it triggers our satiety hormones, which make us feel full. USN meal replacement shakes have 25g of protein per serving.
- FEEL FULL FOR LONGER: USN’s meal replacement powder has been specially formulated by a dedicated team to ensure you feel full for longer, reducing the need to snack or over-eat and supporting a reduced calorie diet - to help you reach your weight goals.
£34.99
£45.00 (22% Off)
2
Best Value
30% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

USN
30% Off

USN Diet Fuel Ultralean Meal Replacement Shake Powder (Strawberry, 2kg - 36 Servings/Meals) Tasty High Protein Shake To Feel Full For Longer, Weight Control Powder, Drink Mix With 25g Protein

USN

£31.49

£45.00
(30% Off)

More Details
Main highlights
- YOUR NEW MORNING ROUTINE: Get your day off to the best possible start with these fantastic, and delicious, USN Meal Replacement Shakes. You don’t need to go without breakfast to help you lose weight - one quick shake and you are ready to take on the day!
- USN HIGH PROTEIN SHAKE POWDER: Use Diet Fuel Meal Replacement Shakes to help you reach your weight-loss goals. Perfect support for a low-calorie diet - a quick & easy way to get what your body needs, without the calories. Packed with 24 Vitamins & Minerals.
- ULTIMATE SPORTS NUTRITION: USN are at the forefront of sports nutrition research, making effective sports nutrition supplements for professional and non-professional athletes, pre or post workout. Science-driven nutrition so we can achieve together.
- HIGH PROTEIN MEAL REPLACEMENT: Protein is absolutely vital if you are looking to lose weight. When we take protein on board, it triggers our satiety hormones, which make us feel full. USN meal replacement shakes have 25g of protein per serving.
- FEEL FULL FOR LONGER: USN’s meal replacement powder has been specially formulated by a dedicated team to ensure you feel full for longer, reducing the need to snack or over-eat and supporting a reduced calorie diet - to help you reach your weight goals.
£31.49
£45.00 (30% Off)
3

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Premium Body Nutrition

Meal Replacement Banana

Premium Body Nutrition

£19.85

More Details
Main highlights
- Suitable for Vegetarians
- PBN Meal Replacement Banana 2.4kg Tub
- New Improved flavour
- Meal replacement product are only recommended for weight control as part of an energy restricted diet
- Each Pack contains 40 Servings
£19.85
4

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Premium Body Nutrition

Meal Replacement Banana

Premium Body Nutrition

£18.86

£19.85
(5% Off)

More Details
Main highlights
- Suitable for Vegetarians
- PBN Meal Replacement Banana 2.4kg Tub
- New Improved flavour
- Meal replacement product are only recommended for weight control as part of an energy restricted diet
- Each Pack contains 40 Servings
£18.86
£19.85 (5% Off)
5
22% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

SlimFast
22% Off

SlimFast Meal Replacement Shake for Weight Loss & Balanced Diet, High Protein, Vitamins, Minerals, White Chocolate & Raspberry Flavour, 16 Meals, 584 g, Packaging May Vary

SlimFast

£7.82

£9.99
(22% Off)

More Details
Main highlights
- Substituting two main daily meals with meal replacements contributes to weight loss, and substituting one contributes to weight maintenance. Source: COMMISSION REGULATION (EU) No 432/2012 of 16 May 2012
- SATISFY HUNGER: Enjoy two SlimFast diet shakes or healthy snacks (bars) a day as part of our 3.2.1 plan to help you lose weight and keep it off, or enjoy it as part of your balanced diet
- NEVER RUN ON EMPTY: SlimFast Balanced High Protein Meal Replacement Powder supports your weight loss and helps to keep it off, with 14g of protein, no added sugar, and less than 230 kcal per serving
- MULTIVITAMIN AND MINERAL POWERHOUSE: 23 vitamins and minerals (incl. Vitamin A, Vitamin D, Vitamin C, Vitamin B6, Vitamin B12, magnesium and zinc) to support your immunity and keep your metabolism humming
- IRRESISTIBLE FLAVOURS: Our meal replacement shakes for weight loss come in various delish flavours, making your weight loss journey tasty and enjoyable
£7.82
£9.99 (22% Off)

5 Best Diet Shakes of 2026

USN Diet Fuel Ultralean Meal Replacement Shake Powder (Strawberry, 2kg - 36 Servings/Meals) Tasty High Protein Shake To Feel Full For Longer, Weight Control Powder, Drink Mix With 25g Protein

USN Diet Fuel Ultralean Meal Replacement Shake Powder (Strawberry, 2kg - 36 Servings/Meals) Tasty High Protein Shake To Feel Full For Longer, Weight Control Powder, Drink Mix With 25g Protein

Meal Replacement Banana

Meal Replacement Banana

SlimFast Meal Replacement Shake for Weight Loss & Balanced Diet, High Protein, Vitamins, Minerals, White Chocolate & Raspberry Flavour, 16 Meals, 584 g, Packaging May Vary

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SlimFast Meal Replacement Shake for Weight Loss & Balanced Diet, High Protein, Vitamins, Minerals, White Chocolate & Raspberry Flavour, 16 Meals, 584 g, Packaging May Vary

USN Diet Fuel Ultralean Meal Replacement Shake Powder, Strawberry Flavour - 1kg, High Protein Shake Powdered Drink Mix, Low Calorie Diet & Weight Control Powder, 25g Protein

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SlimFast Meal Replacement Shake Weight Loss & Balanced Diet, Vitamins and Minerals, Low Calorie, High Protein, Strawberry Flavour, 16 servings, 584 g, Packaging May Vary

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