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CollaSlim Reviews 2023: Is It The Best Meal Replacement Shake?

Mitchelle Morgan

Updated on - Written by
Medically reviewed by Dr G. Michael DiLeo, MD

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  • Low calorie.
  • Smooth and youthful skin.
  • Supports stronger nails and hair.
  • Can aid in weight loss.
  • Contains essential vitamins and minerals.
  • Has marine collagen and whey protein concentrate.

Brand Information

  • Manufactured by So Body Co.
  • Based in the UK.
  • Small Brand.

Medical Benefits

  • Can aid in weight loss.
  • Supports stronger nails and hair.
  • Smooth and youthful skin.
  • Low calories.

About The Brand

So Body Co is a small UK-based nutritional supplements company in Maidstone, Kent. The company first launched exclusively online in 2019. So Body Co claims to be the first UK brand to create a meal replacement shake with collagen.

So Body Co is a small company dedicated to providing the highest quality nutritional and dietary products to help its users improve their overall health and achieve different health goals.

The company has multiple products on the market. One of their better-known products is CollaSlim, a meal replacement shake

What Is So Body Co CollaSlim?

CollaSlim is intended to take the place of one or two regular meals. It has collagen, highly regarded for maintaining youthful skin, and fibre that provides a feeling of fullness promotes good digestion and enhances bone density. It is utilized to aid in weight loss. Protein and other micronutrients that you could be lacking in your everyday diet are available in the drink. It is not advised to substitute more than one or two meals daily.

The fact that this product is high in collagen, a natural material that nourishes the body and aids in weight loss, is the major reason why most individuals take it. Collagen supplementation can speed up your metabolism to reduce fat mass when combined with a balanced diet. What’s wonderful is that collagen also aids in developing lean muscle mass. Since muscle tissue burns more calories than fat, it can aid in weight loss.

Feature Product & Coupon


Best Reputation


  • Low calorie.
  • Smooth and youthful skin.
  • Supports stronger nails and hair.
  • Can aid in weight loss.
  • Contains essential vitamins and minerals.
  • Has marine collagen and whey protein concentrate.

Does CollaSlim Really Work?

Like most other meal replacement and protein powders, the question of whether or not the product works can sometimes be difficult to answer. However, by the overwhelmingly positive reviews from customers who bought and used the product, we can deduce that CollaSlim works.

Most of the customers have indicated that they have been able to lose body weight with continued usage of the product. Some have also noted that their skin looks much better, and their hair quality has improved. Reviews note that the product has helped improve mobility, especially for older users.

Even with all the positive reviews, we recommend researching to determine if CollaSlim will benefit you. The main reason is that not all users have the same results from using the product. Furthermore, you should seek advice from your doctor before using the product.


  • Can aid in weight loss.
  • Supports stronger nails and hair.
  • Promotes smooth and youthful skin.
  • Is low in calories.


  • Low quantity of healthy fats and fiber.
  • Relatively high per-calorie cost.

CollaSlim Ingredients

This weight loss shakes from So Body Co have various ingredients such as skimmed milk powder, whey protein concentrate, peptan marine collagen, oat flour — gluten-free, So Body vitamins and minerals blend, natural flavoring, L-cystine, sweetener — sucralose, and thickener — Xanthan gum.

A single serving of the shake, 40 grams, contains five grams of collagen. It provides 145 calories before mixing with anything and 201 calories when mixed with almond milk.

CollaSlim Ingredients

One of the things that stands out about this product is the fact that it is very low-calorie. A serving of 40 grams of this powder contains just 201 calories when mixed with almond milk. Of course, depending on what you choose to mix the supplement with, the calorie count of each serving may vary.

The low-calorie content makes the shake a good option for people trying to lose weight. This, together with the 800 and 1200 plans outlined on the manufacturer’s website, can help individuals with their weight reduction goals when properly implemented.

Another benefit of the supplement is supporting the growth of healthy and strong hair and nails. It also can improve the appearance of your wrinkles and fine lines.

The product comes in five different flavor variants. These are chocolate, strawberry, vanilla, banana, and coffee.

Like all supplements on the market, So Body Co CollaSlim weight loss shake does make claims that tout its benefits. Let us look at the ingredients included in the meal replacement products and see how they help customers achieve their intended results.

Whey Protein Concentrate

WPC,[1] whey protein concentrate, has a similar amino acid composition to intact protein. WPC can help elevate amino acid concentrations in the plasma to a higher level more rapidly after intake. It can also help with muscle recovery after exercise.

We suspect that the manufacturer added whey protein concentrate because the marine collagen—discussed below—is not a complete protein.

Skimmed Milk Powder

This is a rich source of calcium. Skimmed milk[2] powder has low fat and high nutritional value because of its higher calcium, protein, and lactose content. This study[3] also indicates that it can aid in curbing appetite.

Peptan Marine Collagen

Peptan marine collagen is full of type I collagen,[4] which is important for developing skin, hair, nails, teeth, and bones. It also helps improve skin elasticity, strengthens hair, and prevents hair thinning.

Oat Flour

Beta-glucan, a dietary fibre found in oats, can be beneficial[5] in lowering cholesterol. It also has anti-diabetic properties.

So Body Vitamin And Mineral Blend

So Body Vitamin and Mineral Blend contain vitamins K1, E, D3, C, B12 and B6, and A. Other elements include biotin, calcium, copper, folic acid, iron, magnesium, iodine, manganese, niacin, phosphorus, pantothenic acid, selenium, potassium, thiamine, riboflavin, and zinc.

All these vitamins and minerals[6] offer a wide range of benefits to the body and support overall well-being.

One of the things that we noted was that the multivitamin blend includes these minerals and vitamins within the recommended daily requirement.

Other Ingredients

  • Sucralose: This is an artificial sweetener. One main advantage of sucralose is that it contains no additional calories but may affect blood glucose levels. It also may have negative effects on the bacteria balance in the gut, which can affect digestion and blood sugar levels. 
  • Xanthan is a polysaccharide with several commercial applications, including as a typical food ingredient. It works well as a stabilizer, emulsifier, and thickening agent to keep components in the supplement from separating

Alternatives To CollaSlim

PhenQ Meal Shake

PhenQ Meal Shake

See PhenQ Review

  • Contains vegetable proteins.
  • Contains antioxidants.
  • Offered as a meal replacement.
  • Too sweet for some users.


See LYFE Fuel Review

  • Is low-calorie.
  • Supports weight loss.
  • Contains gum and fibre.
  • Expensive.
Organifi Complete Protein

Organifi Complete Protein

See Organifi Review

  • USDA Certified Organic.
  • Vegan-friendly.
  • Supports muscle bulking.
  • Expensive.

Health Benefits Of CollaSlim

Smooth And Youthful Skin

One of the main ingredients in the product, marine collagen, contains the necessary elements to promote healthy and smooth skin. This makes So Body Co CollaSlim a meal replacement shake with the additional benefits of combating signs of aging.

Supplementing Collagen Levels

As we grow older, from around 30, our ability to produce collagen in our bodies starts to go down. Given that collagen is one of the most important and abundant proteins in the human body, we must supplement its levels using dietary and nutritional options. One of the best ways of doing this is using a meal replacement powder such as CollaSlim.

Supporting Mobility And Joint Health

Collagen in the formulation of the product is crucial in supporting joint health. This is something that becomes more and more important as we grow older. It can help reduce or alleviate pain during mobility, ensuring one can move more freely.

Supporting Weight Loss

Given that both collagen and whey protein improve satiety, this can benefit your weight loss endeavors. Satiety, the feeling of fullness, means that you will not eat a lot and thus consume fewer calories daily, which can help you lose weight and manage it.

The product, when coupled with other regimens or plans, like the 800 and 1200 plan outlined by So Body Co, can be a good way to supplement collagen and help you build lean muscles while losing weight.

Meal Replacement Shake

CollaSlim offers a convenient replacement for one or two daily meals. This means that the user can make a shake in just a few minutes, which can be helpful, especially for busy individuals or when on the go. Additionally, it enables you to have a healthy and filling meal shake, limiting your food cravings. The product contains nutrients to help you go about your daily activities.

Potential Side Effects

Just like with most reputable supplement and meal replacement brands, there have not been any severe side effects reported by the use of So Body CollaSlim.

However, we would like to note that users have complained about feeling bloated or constipated after using the product. Most of these users also noted that the effects were mild, and they went away after continued usage of CollaSlim.

If you consider using this meal replacement powder, we recommend you first talk to your doctor. This is especially the case if you have an existing medical condition, e.g., gastrointestinal problems or diabetes.


The manufacturer recommends mixing 40 grams of the powder with 400 milliliters of almond milk. You may also use skimmed or plant-based milk options or water. You should be aware that mixing the powder will increase the calorie count.

Additionally, So Body Co suggests using their meal replacement powder once or twice daily. They also recommend choosing a healthy snack if you want to supplement the meal shake whenever you feel low on energy or require that extra boost.

CollaSlim Review: What Do Real Users Say?

CollaSlim has positive reviews on TrustPilot, the official website, and major online selling platforms like Amazon. Here are a few of the reviews left by buyers on the official CollaSlim website:

I’ve been using  Collaslim for a few months now and I love it, I have both the chocolate and vanilla flavours and mix them with water. I tried using oat milk and almond milk but found I preferred it with water, it also means less calories. In the summer I was adding crushed ice and berries which was delicious. I have noticed my hair feels thicker and my skin appears smoother, at 68 years old this is wonderful.

Maureen D

Started off using collegen with peptides , but needed to lose some weight . So changed to colloslim…I love the shakes , really tasty. I’m on my second purchase and I’m being told I look really well and that my skin glows ..I’m so happy.

Nicola G.

I have taking So body for a few years now, it has really helped my hair, skin and nails. So when I came across Collaslim Meal replacement and I needed to drop some wait I purchased the banana bread, chocolate and coffee packs. I have lost over 2 stone since last December, I am now at my target weight and want to keep it that way so I just have one Collaslim for breakfast and a healthy lunch and evening meal. I add one scoop of the plain SoBody powder so that I get the correct amount of collage…

Vivian B

Final Thought

There are many meal replacement products available. Choosing the right product can sometimes be challenging.

One way that CollaSlim stands out is the low-calorie count per serving. With a calorie count of 145 per serving before mixing it, it can be a good option for individuals looking for a meal replacement product to support their weight reduction strategy.

Furthermore, the product’s formulation contains marine collagen, which can help support nail, skin, bone and joint, and hair health. 

Despite all these things and the amazing user reviews, we advise you to talk to a registered dietitian before taking CollaSlim.

Frequently Asked Questions

What is CollaSlim used for?

CollaSlim is a meal placement product that contains collagen. It provides a quick and easy way to replace one or two meals per day. The product has a low-calorie count, which can help you reduce your calorie intake and thus support weight loss.

How much weight can I lose with meal replacement shakes?

There are no specific figures for this. This is because weight loss can vary among different people when using meal replacement shakes. There are various reasons for this, including genetics, what products one uses, the duration of usage, using shakes together with other weight loss regimens, etc.

Is CollaSlim a keto?

This is not stated on the product’s website. You must ask your nutritionist whether you can use CollaSlim and, if so, whether it is keto-friendly. Different keto diets[7] have different limits for carbs, so you can add carbs to the ingredients label to see if you will be going beyond your limit — anywhere from 20 to 50 carbs a day.

What is the best weight loss shakes?

There are many weight loss shakes available on the market. Finding the best can be a challenge. Nonetheless, you can try CollaSlim and see if it will work. Remember always to consult your doctor before you start taking CollaSlim or any other weight loss supplements. Also, figure into your decision what type of diet you are on.

How do you take CollaSlim?

You mix 40 grams, one scoop of CollaSlim, in 400 milliliters of almond milk — other plant-based milk options, skimmed milk, or water can also be used. You can use the shake to replace one or two meals per day.

+ 7 sources

Health Canal avoids using tertiary references. We have strict sourcing guidelines and rely on peer-reviewed studies, academic researches from medical associations and institutions. To ensure the accuracy of articles in Health Canal, you can read more about the editorial process here

  1. West, D., Abou Sawan, S., Mazzulla, M., Williamson, E. and Moore, D. (2017). Whey Protein Supplementation Enhances Whole Body Protein Metabolism and Performance Recovery after Resistance Exercise: A Double-Blind Crossover Study. Nutrients, [online] 9(7), p.735. doi:10.3390/nu9070735.
  2. Oh, T.-W., Igawa, S. and Naka, T. (2015). Effects of skim milk powder intake and treadmill training exercise on renal, bone and metabolic parameters in aged obese rats. Journal of Exercise Nutrition & Biochemistry, [online] 19(3), pp.247–254. doi:10.5717/jenb.2015.15090711.
  3. Dove, E.R., Hodgson, J.M., Puddey, I.B., Beilin, L.J., Lee, Y.P. and Mori, T.A. (2009). Skim milk compared with a fruit drink acutely reduces appetite and energy intake in overweight men and women. The American Journal of Clinical Nutrition, [online] 90(1), pp.70–75. doi:10.3945/ajcn.2008.27411.
  4. Naomi, R., Ridzuan, P.M. and Bahari, H. (2021). Current Insights into Collagen Type I. Polymers, [online] 13(16), p.2642. doi:10.3390/polym13162642.
  5. Paudel, D., Dhungana, B., Caffe, M. and Krishnan, P. (2021). A Review of Health-Beneficial Properties of Oats. Foods, [online] 10(11), p.2591. doi:10.3390/foods10112591.
  6. Zhang, F.F., Barr, S.I., McNulty, H., Li, D. and Blumberg, J.B. (2020). Health effects of vitamin and mineral supplements. BMJ, [online] p.m2511. doi:10.1136/bmj.m2511.
  7. The Nutrition Source. (2018). Diet Review: Ketogenic Diet for Weight Loss. [online] Available at: https://www.hsph.harvard.edu/nutritionsource/healthy-weight/diet-reviews/ketogenic-diet/#:~:text=The%20ketogenic%20diet%20typically%20reduces,and%2010%2D20%25%20protein.‌
Mitchelle Morgan

Medically reviewed by:

Michael DiLeo

Mitchelle Morgan is a health and wellness writer with over 10 years of experience. She holds a Master's in Communication. Her mission is to provide readers with information that helps them live a better lifestyle. All her work is backed by scientific evidence to ensure readers get valuable and actionable content.

Medically reviewed by:

Michael DiLeo

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