Weight Loss Shakes
Check out our range of diet shakes, offering a variety of blends that combine the ideal ingredients and nutritionals to help you achieve your fitness goal.
Shop Weight Loss Shakes at Myprotein
Weight loss shakes are designed to work hard within a calorie-controlled diet — delivering high protein content in a format that's quick to prepare and easy to fit around a busy day. Whether you're looking for a shake to replace a meal or something to complement your existing routine, the range here covers a variety of formulations, from ultra-lean whey isolates to nutrient-packed meal replacements loaded with vitamins and minerals.
Every product is developed by Myprotein's expert nutritionists, with a focus on quality ingredients and transparent nutrition. With options ranging from fast-absorbing whey isolate to collagen-based and EAA-enriched formulas, there's a weight loss shake format to suit different goals, dietary preferences, and training styles.
Who Weight Loss Shakes Are For
These shakes are built for anyone working towards a leaner physique while keeping protein intake high. If you're in a calorie deficit and want a convenient way to hit your protein targets, a diet shake makes that significantly easier without requiring you to prepare a full meal every time. Protein contributes to the growth and maintenance of muscle mass1 — particularly relevant when you're cutting calories and want to preserve what you've built.
They're also well-suited to people with structured routines who want portion-controlled nutrition that fits neatly into their day. From those just starting out on a weight management journey to experienced athletes maintaining condition during a cut, weight loss shakes serve a wide range of people with a common goal: more protein, fewer calories, less hassle.
When to Use Weight Loss Shakes
Diet shakes fit naturally into multiple points of the day. As a meal replacement, they work well at breakfast or lunch — times when preparing a full meal isn't always practical. Used this way, substituting two daily meals of an energy restricted diet with meal replacements contributes to weight loss2, and substituting one daily meal of an energy restricted diet with a meal replacement contributes to the maintenance of weight after weight loss3.
Post-workout is another popular window, particularly for higher-protein options like whey isolate. After training, you want protein delivered quickly, and a shake takes care of that without the extra calories that can come with whole food sources. Some people also use slimming shakes as a between-meal option to keep protein intake consistent throughout the day.
Weight Loss Shakes Benefits
High Protein, Lower Calorie
The core appeal of a diet shake is the ratio — significant protein in a format that keeps overall calorie intake in check. Options like Impact Whey Isolate deliver up to 26g of protein per serving, making it straightforward to hit daily targets without overloading on calories. Protein contributes to the maintenance of muscle mass1, which matters whether you're training hard or simply trying to eat less without losing lean tissue.
Convenient Meal Replacement Format
Slimming shakes remove the need to plan, prep, and cook every single meal. For anyone managing a calorie deficit, this kind of structure is genuinely useful — especially on busy days when the alternative might be a less nutritious grab-and-go option. Meal replacement blends often go further, including added fibre, vitamins, and minerals to round out the nutritional profile.
Packed with Vitamins and Minerals
The best diet shakes aren't just about protein. Options like Protein Meal Replacement Blend are formulated with a wide range of micronutrients, meaning you're not just cutting calories — you're still getting the nutritional breadth your body needs. This includes B vitamins, which contribute to normal energy-yielding metabolism4, and vitamin C, which contributes to the normal function of the immune system5.
Multiple Formats to Choose From
The range includes whey isolate, hydrolysed whey, total protein blends, collagen protein, and EAA formulas — so there's a format that fits your specific goals and dietary preferences. Whether you want something ultra-lean and fast-absorbing or a more complete meal replacement with added fibre, there's a weight loss shake built for that purpose.
Popular Picks
Impact Whey Isolate Powder — Impact Whey Isolate Powder delivers up to 26g of fast-absorbing protein per serving for just 109 calories, making it the go-to for those who want ultra-high protein without the extras.
Protein Meal Replacement Blend — Built for those juggling busy days, this meal replacement blend is high in protein and fibre and packed with vitamins and minerals to keep you on track when a sit-down meal isn't happening.
Impact Diet Whey — Impact Diet Whey packs up to 36g of protein per serving alongside added choline, CLA, and green tea extract for those looking to maximise their nutritional intake in one shake.
FAQs
What are weight loss shakes?
Weight loss shakes are high-protein powders formulated to support a calorie-controlled diet. They typically deliver a concentrated dose of protein with fewer calories than a standard meal, making them a practical tool for anyone working to reduce body fat while keeping protein intake consistent. Formats range from lean whey isolates to complete meal replacement blends packed with added vitamins, minerals, and fibre.
What is the difference between a weight loss shake and a meal replacement?
A weight loss shake is primarily focused on delivering protein in a low-calorie format, while a meal replacement is formulated to stand in for a full meal — typically including a broader range of nutrients such as fibre, vitamins, and minerals alongside the protein. Protein Meal Replacement Blend is a good example of the latter, offering high protein and fibre alongside a comprehensive micronutrient profile. Many people use both formats, depending on whether they're replacing a meal or supplementing one.
How do diet shakes work as part of a weight loss plan?
Diet shakes work by making it easier to maintain a calorie deficit without sacrificing protein intake. When used as directed within an energy-restricted diet, substituting two daily meals with meal replacements contributes to weight loss2. They don't replace the fundamentals of good nutrition and consistent activity — but they do make hitting your numbers considerably more manageable, day in, day out.
Which weight loss shake should I choose?
If you're after the leanest possible option with a high protein hit, Impact Whey Isolate is a strong choice — delivering up to 26g of fast-absorbing protein per serving with ultra-high protein content. For a more complete meal replacement experience with added vitamins, minerals, and fibre, Protein Meal Replacement Blend is purpose-built for that role. If you want a middle ground with a very high protein yield, Impact Diet Whey offers up to 36g of protein per serving alongside choline, which contributes to normal lipid metabolism6.
When is the best time to drink a weight loss shake?
Meal replacement shakes work well at breakfast or lunch — practical windows where preparing a full meal isn't always possible. Post-workout is another effective time, particularly for whey-based options, where fast-absorbing protein is useful after training. Some people also use diet shakes between meals as a protein-focused option that fits within their daily calorie target.
How much protein should a weight loss shake contain?
Most effective diet shakes contain at least 20g of protein per serving, with higher-end options reaching 26–36g. The right amount depends on your total daily protein target, body weight, and activity level — but protein contributes to the maintenance of muscle mass1, so keeping intake high during a calorie deficit is generally recommended. Check the label of each product for per-serving protein content before selecting.
Are slimming shakes suitable for people who train regularly?
Weight loss shakes are well-suited to active individuals, particularly those in a cut or working to reduce body fat while maintaining training output. High-protein formulas like whey isolate and hydrolysed whey are commonly used around workouts for their amino acid content. Protein contributes to the growth and maintenance of muscle mass1, making these shakes a practical fit for gym-goers managing their calorie intake alongside a training programme.
Who developed the weight loss shakes at Myprotein?
All products in the range are developed by Myprotein's expert nutritionists. Each formula is built around specific nutritional goals — whether that's maximising protein per serving, building in a full micronutrient profile, or creating a lean, fast-absorbing option for post-training use. The result is a range that covers a variety of formats and nutritional priorities under one roof.
How many weight loss shake formats are available?
The range includes whey isolate, hydrolysed whey, total protein blends, collagen protein, EAA formulas, and dedicated meal replacement blends — giving you genuine variety depending on your goals and preferences. Some are formulated for speed of absorption, others for nutritional completeness, and some sit in between. Flavour options vary across the range, with most products available in multiple varieties.
Do weight loss shakes contain added vitamins and minerals?
Some do, and some don't — it depends on the product. Meal replacement blends like Protein Meal Replacement Blend are specifically formulated to include a broad range of vitamins and minerals alongside protein and fibre. Leaner options like Impact Whey Isolate focus primarily on protein delivery. If micronutrient coverage is a priority for you, a meal replacement blend is the more complete choice.
1. Protein contributes to the growth and maintenance of muscle mass.
2. Substituting two daily meals of an energy restricted diet with meal replacements contributes to weight loss.
3. Substituting one daily meal of an energy restricted diet with a meal replacement contributes to the maintenance of weight after weight loss.
4. Vitamin B12 contributes to normal energy-yielding metabolism.
5. Vitamin C contributes to the normal function of the immune system.
6. Choline contributes to normal lipid metabolism.