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Review summary

Created with AI, based on recent reviews

Evaluating 26 reviews, most reviewers were unhappy with their experience overall. Many customers expressed significant dissatisfaction with the quality of the products, particularly the new meal replacement bars and shakes, describing them as having a strange texture, unpleasant taste, or being barely edible. Reviewers frequently reported a chemical, synthetic, or disinfectant-like taste in various products, especially the Cafe Latte shakes, leading many to find them undrinkable and to discard them. There was also widespread frustration regarding discontinued products that customers loved, and a general sentiment that the company has gone downhill since changing recipes. Conversely, a small portion of people felt satisfied with some products, particularly the shakes, finding them lovely and helpful for nutrition, and some enjoyed specific snack bars. However, some customers also noted issues with packaging, specifically the use of more plastic and the lack of portability for some items.

What people talk about most

Product

Clients share ambiguous opinions on product, with many expressing significant disappointment with recent... See more

Quality

Customers had negative experiences with product quality, with many reporting that items tasted disgusting,... See more

Reviews shaping this summary

Rated 2 out of 5 stars

What has happened to the new meal replacement bars...the texture feels strange and the taste is really unpleasant (more synthetic). Not sure why they changed them but I won't be buying them again. I l... See more

Rated 2 out of 5 stars

They use to have berry vegan slimfast, they stopped selling it. I could had that with water and gave me all nutrients without eating , stop selling it. I don’t understand why when I like something and... See more

Rated 1 out of 5 stars

Can see why the new meal replacement bars are currently on offer - they are barely edible . Synthetic / oversweet/ ultra processed . Will be trusting the recommendation of reviewer who recommends Cam... See more

Rated 1 out of 5 stars

I was a regular buyer of cafe latte ready made shakes and spent a fortune on them as loved them. However have cancelled my subscribe and save with Amazon as the last three packs have smelt and tasted... See more


Company details

  1. Fitness and Nutrition Service
  2. Vitamin and Supplements Store
  3. Weight Loss Service

Information provided by various external sources

Easy, Doable Weight Loss using Meal Replacement Shakes, Snacks + a 600 Calorie Balanced Meal. Weight loss – we’re on it. With our Slimfast 3.2.1. Plan


Contact info

1.9

Poor

TrustScore 2 out of 5

110 reviews

5-star
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1-star

Hasn’t replied to negative reviews

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Rated 2 out of 5 stars

They use to have berry vegan slimfast

They use to have berry vegan slimfast, they stopped selling it. I could had that with water and gave me all nutrients without eating , stop selling it. I don’t understand why when I like something and they been selling it crazy , they were making profit out of that they stopped selling it.

July 22, 2025
Unprompted review
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Rated 1 out of 5 stars

Meal Replacement Bars Horrible Aftertaste

I used to love the chocolate and orange meal replacement bars but the new ones are disgusting with a horrible aftertaste. I hope you can still get the original ones as won’t be buying the new ones again. I have been using the Cambridge bars which are lovely and if your recipe makers try these compared to your new ones they will taste the difference.

June 30, 2025
Unprompted review
Rated 4 out of 5 stars

Takes the hassle out of meal preparation!

I buy Slimfast from Amazon and I am now 7 weeks in,(2 a day with a meal in evening, some snacks) and have lost almost a stone.
I feel good, sometimes hungry but that is what happens when you want to lose weight! You have to be determined and Slimfast appears to provide essential vitamins etc, no issues with taste,and I don't really eat a lot of sweet things at all.I use Almond milk too.

May 26, 2025
Unprompted review
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Rated 5 out of 5 stars

I have been on this diet for 1 week now…

I have been on this diet for 1 week now I have 2 shakes a day one for breakfast and one for lunch I usually get hungry in between lunch and dinner so I snack of peppers or pineapple and for dinner I have a chicken breast fried in water and a side of baby potatoes boiled in the same pan as broccoli and cut up some more pepper for another side I have lost. 6 pounds just this one week 100% reccomend dont listen to the loaners they gave up to easily

May 4, 2025
Unprompted review
Rated 1 out of 5 stars

new bars are too soft and sweet

Ive been having the "old"meal replacement bars for abt a year to maintain my weight, they work fine and taste delicious-crunchy and not too sweet, . A week ago I bought 2 packets of the new bars-1)dark choc with cranberries and 2)fudge. I have just tried them and they are disgusting! Soft, no texture at all and soooo sweet! Ive just thrown the remaing bars away. If it aint broke- dont try to fix it Slimfast!

May 12, 2025
Unprompted review
Rated 5 out of 5 stars

why do people moan about this?

I cant understand why people moan about slimfast. After staring in March I've lost 6kg. I dont go to the gym or work out. Just gave up the junk food and follow the plan.... and got smaller plates. The choccy bars do help too.

April 8, 2025
Unprompted review
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Rated 5 out of 5 stars

I started slimfast 2 weeks ago

I started slimfast 2 weeks ago and in total have lost 8Ib which I’m ecstatic about as I’ve done every diet going and never lost that amount. Early days I know but I am actually enjoying the shakes , I blend with fruit and Greek yoghurt to make a smoothie , fill glass with ice and am completely full for ages. I have only tried raspberry and white chocolate shake which is so good , am off to buy the strawberry one soon so hopefully this will be just as good.

March 25, 2025
Unprompted review
Rated 1 out of 5 stars

Slimfast Strawberry Shake - It's A No From Me

I recently tried a Slimfast Strawberry shake but I really couldn't drink it. It had a very unusual smell and a very artificial and unpleasant taste that genuinely made me gag trying to drink it. I'm not sure what animal was milked to make these shakes but it sure doesn't taste very "cowey".... Very disappointing.

March 25, 2025
Unprompted review
Rated 2 out of 5 stars

The shakes are okay

The shakes are okay, the meal bars are the most disgusting things I have ever tasted. Complete waste of money

March 18, 2025
Unprompted review
Rated 5 out of 5 stars

I recently put on a lot of weight

I recently put on a lot of weight, partly due to medication, but also due to just listening to "food noise" and basically giving in.
When I no longer needed the medication, I was left very overweight and miserable.
I started on Slimfast, as I wanted to keep it simple and not wishing to follow a recipe every day whilst working full time. I know I would just get sick of the faff every day whilst also cooking a meal for my family separately.
I started with one for breakfast, and one for lunch with a satsuma and light and free yogurt at lunchtime,then the same evening meal as everyone else but maybe swapping out the creamy mashed potatoes or chips with a baked potato and side salad.
For 2 weeks, nothing happened, not one ounce lost. But I decided to use up the rest of the tubs so as not to waste them.
Then I noticed the changes, firstly I felt less bloated, then I stepped on the scales. 4 pounds in one week! I was thrilled, and more than that I was enjoying the shakes and felt the "food noise" diminishing.
Seeing the numbers on the scale going down encouraged me to carry on and I will continue to use this for as long as i need to. Then to maintain it, I'm planning to use it for breakfast and lunch, but eat more normally at the weekends.
All in all I'm very happy and enjoying feeling lighter and definitely not restricted. Good luck in your weight loss journey.

February 26, 2025
Unprompted review
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Rated 1 out of 5 stars

Used to use them found they used to…

Used to use them found they used to taste nice this time i struggled to get it down and when i did i felt so sick and still do 10 hours later i will be throwing the others out there has definitely been changes made for the worse as seen by all the other bad reviews

February 10, 2025
Unprompted review
Rated 1 out of 5 stars

I might be interested in purchasing…

I might be interested in purchasing Slimfast & trying to shed a few pounds but I'm afraid your advert on uk television does nothing for your product & find myself switching channels because your ad is so irritating it tells me nothing about Slimfast its just a load of annoying noise.

January 22, 2025
Unprompted review
Rated 1 out of 5 stars

Very disappointed with the customer…

Very disappointed with the customer service provided when I made a complaint. I purchased a 50 serving tin in chocolate flavour and when I opened the tin it gave of a bad aroma and when I tasted it , it was terrible. I contacted customer service and,provided them the information requested. They did not bother to contact me back for 10 days so I contacted them. Their response was obviously cut and paste pre written letters and fobbed me off with the excuse they wanted to investigate the matter with the factory and suppliers. This made me feel I was at fault and they wanted to check up on me. I would have thought they would have gone out of their way to process a replacement or refund but it seems they would prefer to fight the complaint. I will never buy slim fast again after 12 years of custom.

January 8, 2025
Unprompted review
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Rated 1 out of 5 stars

Slim-fast don’t care about their customers

I eat many Slimfast, chocolate meal replacement bars and never had a problem.
Unfortunately I found a very hard 1 cm piece in one bar and emailed Slimfast. I just wanted to know what the piece was.
I haven’t had a reply, just advertising emails from Slimfast.
This was over 2 weeks ago now and I am shocked by how they don’t seem to care about their customers. I even received an email asking for a review regarding how my problem was dealt with!

October 18, 2024
Unprompted review
Rated 1 out of 5 stars

Absolutely disgusting Customer Service…

Absolutely disgusting Customer Service !!! Several 'free calls' - after going through speal about adults only etc it ring twice and goes dead. Emailed, no response !!

Chocolate shake mix is vile, smells like pure chemicals, foul taste and 'repeats' with a stale horrible chemical taste. Bought the large 1.752 kg - 50 meals, what a waste of money.
Don't touch it with a barge pole !!!

October 22, 2024
Unprompted review

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