If you find yourself short on meal prep time, do you just give up on your weight loss goals? Of course not! There are plenty of other methods and ways for you to plan your meals, and one of them is by taking the meal replacement shakes available in the UK.
We are living in a world where everything needs to happen fast or right away, with every minute counting towards how we manage our time. The same thing goes for fitness and wellness, with just about every new fitness or diet program claiming to help you with your weight loss goals or “gain muscle” in less than two weeks or in 30 minutes.
The thing is, there is no real fast way to becoming healthy and achieve weight loss goals. Long term weight loss goals require a lifetime of dedication and discipline with regards to what we eat, and most of the time you can solve this through eating real food. Eating real food for your weight loss goals can be done with meal prep.
A good example of meal prep is making a menu centred on a high protein healthy meal every day for muscle gain. But let’s face it: People no longer have the time to prepare their meals.
Blogs on the internet will tell you that it will “just take 15 minutes,” but that’s assuming you have everything ready and someone else will do the dishes for you.
When people don’t have their meal prep game on, their tendency is to just eat anything inside the fridge or whatever looks healthy and hope that they don’t go overboard on calories or macros to lose weight, but this lack of discipline doesn’t result in weight loss at all.
If you’re after the best meal replacement shakes, look no further. I made a list of the best meal replacement shakes UK.
I’m not talking about just simple weight loss shakes, but meal replacement shakes that can fully function as a complete meal replacement shake. I also made sure to add more than one vegan option because real food isn’t just sourced from animals.
12 of The Best Meal Replacement Shakes
If you want to know which are the best meal replacement shakes, I reviewed the 12 best meal replacement shakes available to buy in the UK right now.
PhenQ Complete Meal Shake
PhenQ Complete Meal Shake features and benefits
- Replaces 1 full meal
- Helps to shed excess weight
- Satisfies hunger cravings
- 100% plant-based & keto-friendly
- Boosts natural energy
- Increase muscle strength
- Perfect for on-the-go
- 24 key vitamins and minerals
- Low carbs
- Only 269 calories per serving
- Helps shed pounds with science-backed InnoSlim®
- Boosts energy and controls cravings
- 100% money back guarantee
Shape Shake 2.0 Meal Replacement
Shape Shake 2.0 features and benefits
- High quality protein from grass-fed milk
- Nutritionally complete
- Gluten free, no artificial sweeteners
- Contains digestive enzymes
- One of the best tasting meal replacement shakes
- Suitable for healthy weight gain for muscle mass
- Can replace one to two meals per day
Shape Shake 2.0 is one of the best shakes to lose weight in the UK market today. It boasts of a complete amino acid profile, has all the nutrients you want per serving, and is effectively a weight loss shake.
The team at Foodspring reworked the formula to become more of a full meal than just a simple health food or snack. They made sure it’s high protein, high fibre, low sugar, and added all sorts of helpful bits that make Shape Shake 2.0 the standard to beat in the weight loss industry.
The Protein Works Diet Meal Replacement Extreme
Best features and benefits
- 22 essential vitamins and minerals
- Complete amino acid profile
- Controlled calorie intake
- One of the best weight loss shakes
- Fast and slow-release proteins
- 12 months shelf-life
- Sustained energy release
- Under 210 calories per meal
- Uses whey protein isolate; better than whey protein concentrate
- Low in sugar/Low calorie
- High protein/Good for weight gain
- Contains fat burners for more muscle mass
- Vegan option also available
The Protein Works Diet Meal Replacement Shake separates themselves from other top-notch meal replacementshakes by adding fast and slow-release proteins. This is a unique take as most meal replacement shakes would rather use standard whey protein concentrate and call it a day.
Why does having fast and slow-release proteins matter? Because it contributes to sustained satiety. Fast-release proteins help with that feeling of being energised while slow-release proteins help keep you full for longer periods.
Feeling full reduces your tendency to have sweet cravings, effectively curbing your sweet tooth. This makes the formula suitable for those who have weight gain goals or those who want a protein shake that can help in losing weight.
The product also has actual fat burners to help with your weight loss goals, namely carnitine, glucomannan, and green tea extract. The only thing we don’t like here is the price, as it’s easily 25-40% more expensive than some of the other premium brands in the protein shake and meal replacement shakes categories.
BeNu Complete Nutrition Shake
Best features and benefits
- NEW from Myprotein
- 1 meal contains a third of your daily need of all 27 essential vitamins and minerals
- Digestion and immunity support
- Low Sugar
- Gluten Free
- 3 great flavours
- Ready in under 1 minute
- As low as £1.59 per serving
BeNu Complete Nutrition from Myprotein is a nutritionally complete meal, and one of the easiest ways to get all the nutrients your body needs.
Each serving contains a nutritionally rich formula of gluten-free oat flour, whey protein concentrate and soya protein isolate, along with essential vitamins and minerals.
Garden of Life Meal Replacement
Some of the best features and benefits
- 40% Protein per serving
- One of the few nutritionally complete meal replacement shakes
- 44 Different superfoods
- 21 essential vitamins and minerals
- 1.5 billion CFU probiotics
- Can be used to lose weight
- Gluten free, dairy free, soy free
- Safe for vegans
We see Garden of Life Meal Replacement as the next best option because it’s one of the most robust meal replacement shakes ever. If you’re looking for one of the best weight loss shakes, this can be a good pick if you’re on a healthy diet.
Then we also have to mention that Garden of Life’s reputation as a high-quality wellness supplement company is pretty untarnished. After all, you’ll be taking something that comes in a can every day for at least a month, so always buy a shake from a company that’s known for product safety on top of quality.
Well rounded, high protein, lots of probiotics per serving, quality company and formula, you just can’t get any better than this, folks. Garden of Life is definitely one of the best meal replacement shakes today.
Benefits I think you’ll like
- 23 essential vitamins and minerals
- No Added Sugar
- One of the best weight loss shakes in the market
- 15 grams of protein per serving
- Includes a dietary plan for weight loss
- Simple, no frills, and focused formulation
SlimFast is one of the most popular meal replacement shakes due to how it’s advertised specifically to help with your weight loss goals. After all, one of the reasons why people use meal replacement shakes is to lose weight, so going all-in on weight management is always a good marketing idea.
One of the best things about SlimFast is how it’s not a new product at all. If anything, SlimFast has been around for decades through their SlimFast Diet program.
The program involves eating two meal replacement shakes per day plus three snacks. They also guide you into what meal to make on your own for a complete healthy diet. This way, you can start losing weight naturally.
USN Diet Fuel Chocolate UltraLean
Benefits and notable features
- Low Sugar
- Low calorie intake
- 25 grams of protein per serving
- High quality protein source
- Contains branded digestive enzymes
- Formulated with chromium for appetite control and management of blood sugar levels
- High in fibre
- Especially formulated to help with losing weight
- Good for vegetarians/vegan
- Gluten free
- Robust formulation
- One of the best tasting meal replacement shakes on the market
- Available in 5 flavours: Strawberry Cream, Chocolate Cream, Vanilla Cream, Caffe Latte and Banana Caramel
USN Diet Fuel Chocolate UltraLean is one of those meal replacement shakes that seem to cater to people who have serious weight loss goals, but don’t want healthy meals that sacrifice taste. The variety of flavors available is just staggering.
Just like SlimFast, UltraLean definitely doubles down on its weight loss claims, suggesting using their product to replace two meals per day can lead to weight loss.
XLS Nutrition Weight Loss
At a glance notable benefits and features
- 31 grams of protein
- Can replace one to two meals
- High protein
- Nutritionally complete shake
- Less than 250 calories per serving
- Low calorie meal replacement
- Loaded with B-vitamins for energy release
- Comes in 3 flavours: strawberry, vanilla & chocolate
XLS-Nutrition Weight Loss is one of those products that encourages losing weight not just by taking meal replacement drinks, but also suggesting an overall lifestyle upgrade for optimal health.
That is actually different from how most low-quality shakes advertise themselves as the only thing you need when it comes to losing weight.
The product also has an easy-to-follow weight loss plan that revolves around making their protein shake plus other recipes that will make it look and taste better.
They claim that upon completing the weight loss program, they guarantee visible and sustainable results. I’m thinking these results have to do with more lean muscle that comes with a healthy way to gain weight and optimal health.
Vega One All in One Nutritional Shake
We think you’ll like these benefits
- 20 grams plant-based protein
- Vegan protein/Pea protein
- Contains hemp protein, a rare vegan protein
- Has all the nutrients, making it one of the best vegan meal replacement shakes
- Organic veggies and greens
- Well-rounded and plant-based essential nutrients
- Complete amino acid profile
- Contains antioxidants and Omega-3
- Has fibre and probiotics for gut health
- Gluten free, soy free
- Can be substituted like a regular meal
- Certified Vegan
- Only 160 calories
- Low calorie meal replacement
If you’re not fond of animal sources of protein, or would rather have hemp protein or pea protein as sources, then Vega One All in One Nutritional Shake should be a good vegan meal replacement protein shake for you. It’s certified vegan, sources organic vegetables and greens, and loaded with plant-based proteins such as hemp protein and pea protein.
It also contains antioxidants for immunity, and fibre and probiotics for digestive health and optimal health. It can also be substituted as part of your normal meals. All these features make it one of the best vegan meal replacement shakes in the industry.
SCI-MX Diet Meal Replacement Protein Powder
Features and benefits
- Nutritionally a great complete meal replacement
- High protein
- High quality protein source
- High fibre
- Healthy fats
- Moderate amounts of carbs and fat
- High in Zinc, Iodine, and Calcium
- 25 grams of protein
SCI-MX Diet Meal Replacement Protein Powder looks like one of those products that are serious about being a low calorie meal replacement shake. Their macro ratio is really ideal, mimicking a “balanced” meal with 25 grams of protein, 14g carbs, and 4.7g fat.
Each serving contains 30% of your daily vitamin and mineral needs, which means you can easily replace one third of your meals with their product. You can go beyond and replace one to two meals if you think you’re up for it.
It also lists green tea extract as an active ingredient. Green tea extract is one of the best fat burners in the industry thanks to its antioxidant content.Green tea extract works by increasing fat oxidation inside the body, which can lead to better than normal energy yielding metabolism.
As to why it’s ranked this low despite the good formulation, there are other premium meal replacement shakes out there that work better for the price.
SlimFast Advanced Vegan Vitality High Protein Meal Replacement Powder Shake
Best features of this meal replacement shake
- Vegan meal replacement
- Gluten free
- 20 grams of protein
- Soy protein isolate, high quality protein source
- Has green tea for fat burning
- High in fibre
- Low calorie meal replacement
- Good for calorie deficit diets
SlimFast is back at it again with a vegan meal replacement shake alternative to their already popular brand. This time around, they’re appealing to a more specific market – health-conscious people who chose to go full-plant based on their diet. The protein source is also soy protein isolate instead of its whey protein isolate counterpart to fit in with the theme.
This vegan meal replacement shake is probably among the ones with really high fibre content. It’s great news for both digestion and gut bacterial health, yet they’re able to keep the carb content to a moderate level. Furthermore, I think it’s one of the best tasting low calorie meal replacement drinks we have on the list.
Being able to balance carbs and fibre in your vegan meal replacement shake means you get to enjoy the benefits of a high quality vegan meal replacement shake minus the guilt and bloated feeling.
Protein World – The Slender Blend
Benefits I think you’ll like
- Suitable for vegetarians
- Gluten free
- Can replace a regular meal
- No artificial colours or artificial sweeteners
- Only 143 calories per serving
- 26 essential vitamins and minerals
- 24 grams of protein per serving (with almond milk)
- Suitable as a vegan meal replacement
Protein World – The Slender Blend is similar to what MET-RX wants to do with their meal replacement shake, and it’s to be more than just a meal replacer. They don’t use any artificial sweeteners, good for a calorie deficit diet, contain fat soluble vitamins, and promote normal energy yielding metabolism.
Like MET-RX, they also sell themselves as a post-workout meal. This means the angle of this formula includes being good for lean muscle growth or building muscle mass.
The formula is alright, but what really makes it not as good as the others are two things:
- The way they suggest the use of almond milk to maximise the formula. Not everyone has almond milk or liked almond milk, so this suggestion may come off as a way to offset what the formula lacks.
- The label is hard to read. Wrapping a long formula horizontally is never a good idea.
Regardless, it’s still pretty well rounded especially as it also contains probiotics and even a few fat burners on the side. This, and the nutrient content also lets them have the argument of being a nutritionally complete meal replacement shake. Let’s not forget that they also vegan meal replacement choices, making sure they don’t alienate any of their potential customers.
What Are Meal Replacement Shakes?
Meal replacement shakes are exactly what they sound like: Shakes or smoothies formulated to replace a meal, with all the nutrients, minerals, vitamins (especially folic acid for female consumers), and other healthy goodies you would normally find in a typical meal.
Many of them contain herbs, protein powders, and even fibre sources or carb alternatives like brown rice. They are designed to replace a regular meal to help with lean muscle growth, promote normal energy yielding metabolism, and optimal health.
Whilst some people don’t think they’re real food, they are effectively a healthy meal in a shake and keep you feeling fuller for longer. The latter can help with losing weight or if someone is on a low calorie or calorie deficit diet, and they want to reduce their sweet cravings.
Sometimes known as weight loss shakes or diet shakes, meal replacement shakes weren’t really designed for weight loss, but the fact that the calories and macros are quantified can give you a sense of control with how much you eat per meal. This can go a long way for those who are struggling with losing weight or those who want to gain weight.
The control you have over the calories you consume, and all the nutrients per serving, can definitely help your typical Joe or Jane with their weight loss or weight gain goals, especially those looking at wanting a high protein diet.
Some meal replacement shakes also work best for those who want the best vegan meal replacement drinks. People are starting to look more into a plant-based diet, and a vegan meal replacement shake with a complete amino acid profile ( not just typical weight loss shakes) creates a huge market.
Regardless of the dietary preference, the best meal replacement shakes work in tandem with a healthy diet. Nothing can replace a healthy diet, but the best meal replacement shake can augment it or fill some of the nutritional gaps.
5 Key benefits of taking meal replacements
So, why would you want to substitute something that needs to be blended or stirred over your usual lunch or snack? Well, a number of good reasons:
Some meal replacement shakes can come in the form of powdered mixes similar to protein shakes and powders, while others come in the form of ready to drink beverages, where all you’ll need to do is shake the bottle and you have a meal.
2. Can help you avoid unnecessary eating
Similar to meal prep, meal replacement shakes can be a form of self-control with regards to appetite. Usually, when you don’t plan your meals, it can lead to eating more calories per day.
You don’t have to go outside the office or your house to buy food you’re not sure fits your low calorie intake or macro requirements. Then, it also has this psychological edge where once you’re done with your shake, you’d feel full or at least no longer craving for more. No sweet cravings, no sweet tooth. Out of sight, out of mind and it’s the same with food.
3. They state the ingredients, the protein, carb, fat content, and the calories per serving or per bottle
This ties with #2 on how the consumer is fully aware of what they’re taking, unlike typical foods that don’t even list the calorie per serving. If your diet program says you only need X amount of anything per meal or per day, these diet shakes can help give you better control over those numbers. This can result in improved weight maintenance.
4. Nutritious by default
The usual office microwaveable foods aren’t exactly the prime definition of health foods or real food, and nutrient density matters highly when you’re after optimal health. What you want to do is make every calorie as healthy and nutritious as possible, and this is what the best meal replacement shakes do. The calorie content is kept to a minimum while the nutrient content is maxed out as much as possible.
5. Save time
Finally, the best perk of taking supplements like these is how they save us time. Imagine having a nutritionally complete meal in just 5 minutes. No more cooking, re-heating, or unnecessary dishwashing. Just mix your meal replacement drinks and you’re done.
Why Meal Replacement Shakes aren’t all good
We highlighted some pretty solid reasons why meal replacement shakes are great for you, so now we also have to look at the other side of the coin and see what makes them not as good as they sound.
- May contain unhealthy ingredients. Depending on what brand you buy, the formula used may contain some rather unhealthy ingredients or fillers. Normally, fillers are used to help “thicken” the shake, add flavour, or prevent powders from caking or lumping. These ingredients may not be immediately bad for our health, but due to how the shakes are taken daily, this may eventually lead to a health problem.
- They aren’t a long-term solution. Meal replacement shakes are pretty handy and can be habit-forming. The convenience, the time saved, and the way it does all the macro and calorie counting for you are huge perks for consumers. However, the idea is to eventually move towards whole foods and not be permanently reliant on what is basically a bunch of nutrients in a bottle.
- They don’t really change eating habits. If you’re fond of snacking, taking meal replacementswon’t fix that. Even if you were to lose weight within the next 30 days of taking them, resuming bad habits even while you’re still ingesting this type of product will only bring the weight back and possibly even more.
What to look for in a Meal Replacement Shake
Meal replacement shakes are great when it comes to weight loss, but what exactly should you be looking for when buying a quality meal replacement shake?
The first thing you have to look for in any supplement is the ingredient list section. If a supplement doesn’t have that, then it’s an easy skip. You may think that this doesn’t happen, but there are products out there who only print ingredients lists by themselves and are not checked by any third-party system with regards to its authenticity.
Assuming the product has the ingredients list, the next part is to read the exact ingredients included per serving.
In a typical meal replacement shake, you should expect to find a long list of ingredients. After all, you are essentially replacing an entire meal’s worth of nutrients, so the list better be long!
Usually, these ingredients are separated by blends and the blends are determined based on function. The common blends include:
- Digestive aides/enzymes: These are ingredients meant to help absorb nutrients better or stimulate proper digestion to prevent digestion problems. [6,7]
- Macros: These are your carbs, protein, and sometimes even fat sources. These have to be correctly stated in both dosage and what form, as some people have food sensitivities especially with gluten and lactose and may wish to source gluten free meal replacement shakes instead.
- Vitamins and Minerals: This blend is usually the longest on the label, complete with dosage and their corresponding daily values or %DV.
- Omega-3 and Omega-6 blend: This is often a separate blend from fats as the source of omega-3 and omega-6 can be either fish oil or sunflower oil, and only one of them is for vegans.
- Fibre and prebiotics: On top of being a great digestion aide, fibre can also help with weight loss as this gives your belly that “full” feeling which is important if you’re only taking a meal replacer for lunch or maybe even dinner. Some types of fibre also double as prebiotics, compounds that promote gut bacterial health which is important for immunity on top of other bodily functions. [1,2,8]
Next to zero fillers
The ingredients section will tell a lot about the quality of a meal replacement shake, especially when it comes to the things they add that aren’t supposed to be there called fillers.
Given that some fillers are necessary during the manufacturing process (i.e. anti-caking agents or powders that increase flowability), they should not be in high number or part of the key ingredients.
The fillers should be declared at the very least, especially when we’re talking about colorants, sweeteners, and other ingredients that give the shake texture.
When it comes to weight loss, you’re always aiming for the most nutrients with the least calories per serving. More than the calories, you should also be on the lookout for a macro ratio, or how much carbs, protein, and fats it has per serving.
Ideally, a meal replacement shake should be composed of:
- 50% Carbs (of which you also include fibre and sugars if any)
- 30% Proteins
- 20% Fats
The numbers can change depending on the product and your goals.
Which is the best meal replacement shake for weight loss?
Shape Shake 2.0 from Foodspring is the best meal replacement shake for weight loss due to its high protein content and robust formulation that promotes appetite control.
A close second would be The Protein Works Diet Meal Replacement Extreme because of how they include actual fat burners in the mix, and how the formula has fast and slow-release proteins to help curb your appetite the rest of the day or until your next meal. This can avoid snacking and intake of excess calories.
Which is the best meal replacement shake for energy?
The Protein Works Diet Meal Replacement Extreme is the best for energy due to its formula that consists of both fast and slow-release proteins. These proteins help maximise the meal replacement shake’s energy boosting effect, extending the energizing feeling throughout the whole day.
The next one would be MET-RX Original Meal Replacement because of its 35 grams of protein per serving. This protein shake makes it more filling than carbs or fat, and when you’re replacing actual meals, you want to make sure your stomach feels as full as possible.
Which is the best meal replacement shake for breakfast?
XLS Nutrition Weight Loss Meal Replacement Shake is the best not just because of the formulation, but because of how it also has an easy weight loss plan that definitely wants you to integrate exercise.
The next one would be SlimFast Meal Shake with almost the same weight loss program knitted closely with their meal shake recipes.
Which is the best meal replacement shake for overall health?
Garden of Life Meal Replacement is the best overall meal replacement shake due to how robust the formulation is, the quality of the ingredients used, the synergy of each ingredient, and they also top it all off with a good serving of probiotics.
I also think Garden of Life Meal Replacement’s reputation as a quality company further exemplifies why they’re the best meal replacement shake for overall health. Anything you will put inside your body has to be safe first and foremost, and Garden of Life is one of those companies that take the extra step for quality and safety.
- Clark MJ, Slavin JL. The effect of fiber on satiety and food intake: a systematic review. J Am Coll Nutr. 2013;32(3):200-11. doi: 10.1080/07315724.2013.791194. PMID: 23885994.
- Leidy HJ, Tang M, Armstrong CL, Martin CB, Campbell WW. The effects of consuming frequent, higher protein meals on appetite and satiety during weight loss in overweight/obese men. Obesity (Silver Spring). 2011 Apr;19(4):818-24. doi: 10.1038/oby.2010.203. Epub 2010 Sep 16. PMID: 20847729; PMCID: PMC4564867.
- Guo X, Xu Y, He H, Cai H, Zhang J, Li Y, Yan X, Zhang M, Zhang N, Maddela RL, Nicodemus-Johnson J, Ma G. Effects of a Meal Replacement on Body Composition and Metabolic Parameters among Subjects with Overweight or Obesity. J Obes. 2018 Dec 26;2018:2837367. doi: 10.1155/2018/2837367. PMID: 30687550; PMCID: PMC6327254.
- Davis LM, Coleman C, Kiel J, Rampolla J, Hutchisen T, Ford L, Andersen WS, Hanlon-Mitola A. Efficacy of a meal replacement diet plan compared to a food-based diet plan after a period of weight loss and weight maintenance: a randomised controlled trial. Nutr J. 2010 Mar 11;9:11. doi: 10.1186/1475-2891-9-11. PMID: 20222968; PMCID: PMC2851659.
- Kruschitz R, Wallner-Liebmann S, Lothaller H, Luger M, Ludvik B. Long-Term Weight-Loss Maintenance by a Meal Replacement Based Weight Management Program in Primary Care. Obes Facts. 2017;10(2):76-84. doi: 10.1159/000454836. Epub 2017 Apr 5. PMID: 28376497; PMCID: PMC5644929.
- Ianiro G, Pecere S, Giorgio V, Gasbarrini A, Cammarota G. Digestive Enzyme Supplementation in Gastrointestinal Diseases. Curr Drug Metab. 2016;17(2):187-93. doi: 10.2174/138920021702160114150137. PMID: 26806042; PMCID: PMC4923703.
- Roxas M. The role of enzyme supplementation in digestive disorders. Altern Med Rev. 2008 Dec;13(4):307-14. PMID: 19152478.
- Slavin J. Fiber and prebiotics: mechanisms and health benefits. Nutrients. 2013 Apr 22;5(4):1417-35. doi: 10.3390/nu5041417. PMID: 23609775; PMCID: PMC3705355.
Meal Replacement FAQs
Can I only drink meal replacement shakes?
If you bought a meal replacement shake, then of course you can only drink them.
Even if you do think of using a spoon or scoop to just chew on them, this is not only hard to do (you will be doing quite a lot of chewing), but it will also be inefficient when it comes to nutrient absorption. The formulation of meal replacement shakes were designed to make ingredients easier to absorb in a liquid medium, so removing water from the computation can negatively affect the product’s efficacy.
Can I use meal replacement shakes to lose weight?
Some meal replacement shakes are formulated to help you lose weight, especially those with fat burners and lots of fibre in the formula. Generally speaking, they can only help you lose weight if:
– You’re controlling total calories consumed per day.
– You’re strict with using meal replacers to actually replace meals and not as a snack in-between meals.
– You’re using the recommended diet plans provided.
Some meal replacements are also meant to be taken as a post workout meal, so if you’re also doing your part in exercising, taking products like these should lead to weight loss.
What is in a meal replacement?
Meal replacement shakes often contain all the basic nutrients including vitamins and minerals. They also have a good source of protein and fibre. A few have fat in the form of plant oils or omega-3 fatty acids or MCT oils.
More specialised, premium meal replacements have digestive enzymes, prebiotics, and probiotics in the mix too.
What is the most filling meal replacement shake?
The most filling meal replacement shakes are those that have high protein content and high fibre content. This is because protein and fibre are hard to digest, which makes them filling.
On our top 10 list, the most filling would have to be USN Diet Fuel Chocolate UltraLean and The Protein Works Diet Meal Replacement Extreme.
How many calories are in a meal replacement?
This varies per product, but the average seems to be between 250 to 350 calories. Shakes that go higher often add more carbs with the intent of being a post-workout supplement while shakes that go lower are often shakes taken for weight loss purposes.