A nutritionally complete meal replacement designed to support healthy weight loss and long term weight management:
Try CollaSlim, if it is not right for you, return your empty packs within 90 days for a full refund.
+29,000 people love
CollaSlim!
✅ High Protein Formula: Helps keep you fuller for longer, supports muscle maintenance, and reduces the urge to snack.
✅ 23 Vitamins and Minerals: Provides balanced nutrition while replacing one or two meals per day.
✅ Marine Collagen: Supports skin, hair, and nails as you lose weight.
✅ Quick and Convenient: A nutritionally complete meal designed to help create a calorie deficit without compromising nutrition.
EFFECTIVE SUPPLEMENTS
All ingredients are sourced from suppliers who meet strict UK standards and are non GMO, third party tested, and heavy metal tested.
OUTSTANDING SUPPORT
Our UK based customer support team is always here to help, and every order is backed by our 90 day money back guarantee.
JOIN THE COMMUNITY
Becoming a So Body Co. customer gives you access to a supportive community of like minded people. Learn, share experiences, ask questions, and stay motivated by real customers on the same journey as you.
Kick start your weight loss journey with everything you need to succeed.
Enjoy better value, more meals, and the tools to help you get started with confidence.
Frequently Asked Questions
CollaSlim simplifies the process of reducing calories to reach your desired healthy weight. However, if you discontinue using the shakes and revert to consuming more calories than your body requires, you risk regaining the lost weight and possibly even more than before.
Instead, the aim is to adjust your intake to match your body's needs, making it easier to control your eating habits.
The University of Oxford conducted a clinical trial on this topic and found that among the individuals assessed long term results, those who followed a meal replacement program weighed less than when they started the program, up to four years later.
A single serving of CollaSlim is designed to replace one meal, and it contains 7.6 grams of sugar when mixed with almond milk, comfortably below the daily suggestion of 30g recommended by the NHS (and Diabetes UK). Furthermore, losing weight can reduce the risk of Type 2 Diabetes by half.
A significant UK research study, DiRECT, explored the effectiveness of an intensive 850 calorie diet in achieving Type 2 Diabetes remission. The trial involved liquid meal replacements for approximately 8 weeks, followed by a gradual reintroduction of food under the guidance of health professionals. At the end of the trial, researchers found that weight loss could indeed lead to Type 2 Diabetes remission. After one year, nearly half of the participants (45.6%) achieved remission. Remarkably, those who maintained their weight loss for up to two years remained in remission.
Extensive clinical trials on collagen effectiveness have shaped our supplements. As the first UK brand to introduce a multi-collagen in 2019, we're well-versed in our field.
Our supplements undergo independent lab testing and are supported by research. Trusted and embraced by thousands of customers the life changing benefits of our products speak for themselves.
Want to read more information on collagen clinical trials? Click here
Get your collagen delivered for free on all orders over £15! With our trusted partners Royal Mail and DPD, your package will be on its way to you, typically arriving within 3-5 days.
Want it even faster? Opt for our £1 first-class shipping at checkout to receive it in just 1-2 days!
As a customer-first company, we are delighted to provide a 90-day money-back guarantee, even if you've finished the pack!
This policy ensures that you have a generous 90-day window to try out our products. If they fail to meet your expectations, you can easily return them to us for a full refund. We aim for you to feel reassured and confident in trying our products without any risk!
Encountered an issue with your delivery? Contact us here
You can view the full ingredients for each flavour here.
Overall rating: 4.9 / 5 from 1544 reviews.
What is this Witchery?! Been using your products for a couple of months now….. (Collaslim shakes as a meal replacement or lunch on-the-go, the Gorgeous Greens and Peptigen daily) … have lost 15lbs and my skin is thanking me. I’m 60 and, post menopause, really was feeling tired, fat and hopeless. Now on the way to getting my mojo back! Thanks, So Body!
As I mentioned in an earlier post I’m very sceptical of ‘miracle’ products. However I sent for your starter pack with 3 flavours chocolate, salted caramel and vanilla including shaker and recipe book (not too keen on the chocolate too sweet for me surprisingly) I started off with 2 shakes a day but with Xmas and new year I had to drop back to 1 a day. So that was about 6 weeks ago even with extra food over the holiday I have still lost 5lbs which is brilliant for me but the difference in my hair and nails is unbelievable, at 74 it is starting to thin and as I colour it it looks worse when the grey shows through but it really does feel like it’s thickened up and my nails I’ve had to cut them right back as they were just too long for me. So glad I tried your product as for me it really does appear to be a ‘miracle’ Jenny Moorhouse
Love it. Currently trying out the chocolate. Mixed it yesterday with frozen berries absolutely delicious. Fills me up to lunch time too and I'm not tempted to eat the minded kiddies snacks. Really struggled with weight since menopause arrived 6 years ago but altho early days fell better already. Thank you Michelle
Wow, just wow! This drink is the first I’ve come across that actually fills you up. I’ve tried various other slimming drinks and within an hour I’m really hungry again. I can drink my colla slim (coffee and chocolate are my favourites) before work around 7am and I never feel hungry and don’t think about lunch until my break at 1pm. I have another colla slim for lunch and I can easily last until my evening meal. A real winner for me.
This product I found to be really easy to make up, and really tasts great. It has help me with my cravings and there’s lots of other flavours to choose from, I will be trying the vanilla and Strawberry as bought the starter bundle which was great value and came really quickly x
Tasty shakes packed with protein. Excellent customer service. Postage always prompt. One a day of these shakes helps me maintain my weight and muscle mass.
Thick and creamy, full of flavour! I make mine with skimmed milk and ice. Salted caramel is my favourite!. I've had a patch of eczema on elbow for years and within a month it's gone. The collagen is an added bonus for my maturing skin x highly recommend.
iv lost over three stone its so easy taste great and i dnt feel hungry at all some time i add a banana to it lovely cnt of done it with the shakes love love love and the customer service is amazing too one very happy woman
After seeing Collaslim advertised for quite a while and thinking do I, don't I? Is it just another gimmick?? I finally took the plunge and went for it! I am absolutely over the moon and made the right decision. A PRODUCT THAT DOES EXACTLY WHAT IS SAYS!! It's tasty, filling and in the first week I'm was down 4.5lbs, but more than that I'm no longer bloated and feel more comfortable within myself. The recipes are great too. The Seeded Banana Bread (page 37) is lovely and rather than bake it in a loaf tin, I used a muffin tin making 12 rather than having the 8 slices as per the instructions. Cutting down on the calories and making it go a little further. I'm chuffed to bits. THANK YOU COLLASLIM!!
Collaslim is the best protein shake I’ve ever had. The texture, taste and quality is second to none. Knowing that it is full of collagen and vitamins gives it an added bonus to my daily routine. I started 6 weeks ago and lost over a stone be replacing breast and lunch. Coffee flavour is my absolute favourite. I will never look elsewhere and recommend to all family and friends. xXx
Started using Colla Slim on 30th March 2026 having a shake for breakfast & lunch then a normal healthy option evening meal. 2nd photo is 4 months later on 30th July 2026. I was a little concerned before starting that just a shake would be hard to stick with but how wrong I was. I find them filling and don’t feel the need to snack between. I plan to continue with a shake for breakfast once I’m at a weight I’m happy with. I’m 61 years old. I’ve got the vanilla on subscription and it’s great with an espresso shot added to it at breakfast or frozen fruit for lunch. Total weight loss 1st 10lbs
Great taste. I love the coffee flavour what a shame you are unable to provide it any more, Salted caramel and Strawberry are my next favourite. My husband loves the chocolate flavour and will take some if he is away during lunch. This morning I have Salted Caramel with almond milk and a few frozen raspberries. I'm not sure if it's this product or because I am using unsweetened almond milk but my acid indigestion has gone. If I miss for a couple of days it comes back. The weight hasn't fallen of as quick as some people but it is steadily heading in the right direction. I usually have 1 for breakfast and 1 for lunch with a 600/700 calorie meal for dinner.
I have been having this great drink for a long time now. Can't be without it. Love it.
Really seeing the benefits of restarting my SoBody journey again. I have to confess other brands have been tested but SoBody is my definite go to and staple now! Huge improvement to my Hair, Nails, Skin and Joints and a kick start to my weight loss. Big shout out for Collaslim & Peptigen+
These shakes taste delicious. I mix mine with Almond milk and have one for breakfast and one for lunch. I a 72 with an under active thyroid so my weight loss is slow, but so far in 8 weeks I’ve lost 8lb. A pound a week is fine for me and I intend to keep going. My goal is to lose another 14lb. Slow and steady is good.
Was very sceptical with the shakes but thought I would give it a try.. Was already using the Peptigen + and was very impressed. The shakes are amazing, not hungry at all, I have one around 10:00 then another at 3 pm and then a meal with the family. This works for me.. weight is slowly coming down was not expecting big losses due to my age (70)but the bloating is going and for me that is the best along with my skin, hair and nails. Favourite one vanilla however the chocolate one satisfies the afternoon sweet treat cravings.
This is my 2nd week on the strawberrry one I love it I lost all my cravings I’m on 2 shakes one for breakfast and lunch I feel amazing and I’ve lost weight ❤️❤️
Losing weight for my wedding was proving hard with alot of meal replacers not filling me up so I was snacking in-between... Now with collaslim I feel full the weight is coming off steadily and feel great to add to it here's to the continued weight loss 🍻
I honestly love the chocolate flavoured shake with hazelnut milk. It’s delicious and the new improved formula is just as good if not better. I always have one for breakfast and sometimes I have a shake for lunch too and I have lost 30lbs since January. I feel so much better in myself and am looking forward to the summer for a change.
Loving the shake’s lovely & creamy, I use skimmed milk as don’t like Almond, I could drink it all day, no hunger at all, my shape is changing & feeling a lot healthier overall. Fabulous 😍
After years of using slim fast and various other milk/protein shakes I finally found Collaslim. It's in another league to the others. It's so thick and creamy when used with almond milk, and the 'portion' size being 400ml rather than the usual 200-250 ml is huge. Genuinely filling. My favourite flavours are strawberry and salted caramel, but vanilla and chocolate are fab too. I recommend you try them. Lost 8 lbs so far X xx
really good. mixes well. my joints are no longer in pain and I'm not having to take painkillers daily it also fills me up a lot better
I use these shakes and have tried banana bread, chocolate and Salted caramel. The salted caramel is my favourite. My weight is slowly coming of and I have lost about 3lb in 4wks without exercise.
Tastes unexpectedly Good! I would recommend..
I love it tastes nice! Gives me my chocolate fix!! Lost just over half a stone! So some days I have two glasses or one depending where I am!
Excellent product, Tastes smooth and lovely flavour. Week 1 weigh in and loss of 6.9lbs so definitely works. Highly recommend -great customer service and super quick delivery. I’ve only tried the strawberry one so far but will be trying them all. 5 🌟
This is me today after last week weight in at total 10lbs weight lost. Hopefully on Tuesday weight in i would have lost more, but this week i had last friday, my friend's bday Italian dinner, then yday my son surprised bday n my daughter in law surprised baby shower at london pub n today another friend's bday n we went for Halloween afternoon tea. Too much food n cakes 😭 I swear i hardly ate anything but when i hv underactive thyroid n sluggish metabolism, I just hv to look at food n it's enuf to put weight on. But thanks to colaslim shakes n peptigen collagen drink, im not overly hungry so can control my eating. I have tried many protein shakes n colaslim is the only one that can keep hunger away. Im very happy with the inches Im shedding. My journey with colaslim continues.
Only been having the shakes… one or two per day for just under two weeks, lost 3lbs in my first week and having calorie controlled evening meals. The shakes are delicious and I personally find them very filling! Thoroughly enjoying being part of the eight week challenge and the online community group is very supportive! I’d highly recommend it 🥰
I cannot tell how much I enjoy this product. It really does taste delicious and fills me up every time. No need for guilty snacking now. I start off my day with a healthy breakfast usually boiled or scrambled eggs and toast. With my usual coffee. I’ve only recently started my shakes plan.
Take it to work with me in my portable cup. Just started using it was very surprised how good they taste.
I have only just purchased the starter bundle so am not sure of results yet? What I can say is WOW what a great taste they all have! I ordered strawberry, Chocolate and salted caramel and they all taste absolutely delicious 😋 Make mine with milk and they are so smooth and creamy I can't wait to have one! I don't usually like Chocolate flavoured drinks but this is lovely! Is great that it's gf as so many other brands aren't so I couldn't even consider them. I am hoping the collagen gives me a little added extra as well.
Love this product my favourite flavour ❤️
I’ve been using Collaslim to lose weight, and after that maintain weight loss. What a product! Not only have I lost over a stone in weight, but my hair and skin are thanking me! I turned 60 a couple of weeks ago, and feel so thankful that i discovered Collaslim!
Lost one & half stone since August , by drinking just one collaslim per day ,feel great ,us my skin glows & nails & hair are in better condition too . Best product ever 🙏 thankyou collaslim ,i have recommended your products to all my friends & family 😁👌
I use the collaslim shakes to be healthier. I never used to eat lunch and therefore was not putting good nutrients into my body. The difference to my hair noticed by my hairdresser. My nails are stronger and I'm not hungry! I recommended So Body to my friend in the summer and she is now a fan having lost weight and feels great. The flavours are fabulous. Thank you.
I saw the adverts for this and thought I would give it a try it's lovely. I originally brought, the starter set with the vanilla & collagen both are great. I then brought another chocolate & vanilla when they had an offer on. What I like is that I can do it with Almond Milk as most of the shakes on the market use normal milk. I have tried other shakes but these are the best ones I have had up to now. I'm looking for trying other flavours.
This is great product. Staff very helpful when you need them. Strawberry my favourite
I battle with several chronic conditions and take a lot of medication. Unfortunately, this means I’m not able to exercise and weight gain is very easy. I decided I needed to really tackle this and did some research and really liked the benefits the Colla Slim offered. I have the chocolate and the vanilla (which I add coffee to) and I love both. It’s really made it easy for me and I’m not left feeling hungry. So far I’ve lost 6.8kgs in 7 weeks - and quite a lot to go! When I feel there’s enough of a visible difference I’ll post a further review
I used So Body Collaslim as part of my weight loss program. I’m at goal weight now and still use it to help me maintain my weight (which is what I think it the hardest part!), no more yo-yoing!
I've always got mine ready to go....sits on my worktop 😄
