After using similar products from Healtheries and Complan which are delicious I was really looking forward to trying Optislim's Espresso flavour. This insipid solution contains not a hint of coffee. I had to hold my breath to get it down. I'll be adding cocoa powder to the rest of the sachets and then never buying it again.

I have used Optifast in the past with success but Optislim was suggested as a cheaper alternative.

I purchased three flavours last year Espresso/Banana/Strawberry and found that no matter how hard I tried there would be unpleasant undissolved lumps in the bottom which put me right off.

After reading these reviews I contacted Optislim and they informed me that there was a problem with the yeast used in the Best Before Apr-Jul 2020 batches.

I have now purchased two 19 May 2020 boxes and am having the same problem! (Also two of my original boxes were prior to the date range they mentioned).

I guess you get what you pay for - Optifast is twice the price but at least it works.

So I have been on optifast and had success on it but the cost was a bit prohibitive. So I read reviews on the Optislim and said okay lets give this a go..... Why, why did I do this to myself.

The Chocolate flavour is my normal go to for Optifast - so Optislim Chocolate was purchased.

Well my first one was a different taste - very, very salty. Unsure but okay I will keep trying, no luck, still salty, chunky and just a bit revolting to be honest.

If you don't enjoy the taste you are going to fail in the programme - give this product a miss. Go to Optifast

The 2 stars was only for the price.

Im really happy. i lost 4 kg in my first week, and 2kg per week after that. totaling 10kg in a mnth. I only buy the vanilla. On its own is a bit bland, but i always add a lot of ice and a tea spoon of coffee for breakfast, and some frozen berries for lunch. ive only tryed the cookies and cream bars and there really filling and taste nice to. i struggle drinking water, so put 2 blackcurrent teabags in a jug, and chill it down. 2 litres of herbal tea is so much easier to get through.

Revolting, won’t buy again. Expected something that was drinkable. Wish I had read the reviews before I purchased. Very disappointed with this product.

I have the espresso and vanilla flavours! Both are really awful Optifast taste so much better, I don't care that it is dearer at least i can drink it!

Found Optislim VLCL Vanilla Batch 138707 Best Before 18/4/2020 to be revolting. It did not dissolve properly (regardless of how prepared) and was full of undissolved particles. Not pleasant to drink at all. I would give it a rating of 1

I saw the advertisement on TV for Opti-Slim and as i had been using Opti-fast i thought i would give it a try - I bought the chocolate flavour - what a disappointment it tastes so yuck i cant even drink it. Cheap and nasty.

My husband and I have been on the Optifast for 1 week and really enjoyed the favour (chocolate) shake VLCD Batch was 02 Jan 2020. We have just opened a new box 17 Aug 2020 it’s lumpy and taste different and does not froth up in the shaker like the 02 Jan 2020. There is something missing or changed in the ingredients. Not happy with this product The rating I would have given would have been 5 excellent but since opening the new box my rating is 2 Bad.

Tried the strawberry and it is almost unpalatable - yuk! Tastes nothing like strawberry, couldn't even manage to finish one shake. Chocolate only marginally better. Optifast much better in my opinion.

I’ve been using the coffee optislim for a week now and it’s lovely, mixed with water only it’s great and I kinda look forward to using it twice daily I’ve cut down on normal coffees so that says a lot. Only thing I have started to experience is headaches but have read in possible side effects being potential headaches, and I have cut calories down pretty drastically immediately, but all in all very happy.
I have previously had the sleeve done 5 years ago so have found this to be very palatable as far as that’s concerned, I’ve not had cravings or anything other than mentioned headaches.

I have tried all the flavours but chocolate has the best taste and flavour. When the product isn’t faulty it works well, however the last 5 boxes I have had have been lumpy and watery and don’t work as effectively. I have complained twice with no response. So it seems that the manufacturer is not interested in any kind of feedback or acknowledging their product has a problem so that it can be fixed. I was a happy customer but now will be buying more reliable products such as celebrity slim or optifast.

Just started OptiSlim VLCD shakes. Bought 2 flavours, chocolate and espresso. Espresso was horrible to drink, the taste was just like consuming chemicals and cardboard. Chocolate was much better in taste and texture. Will be sticking with that one. I started off just drinking them with water but now I have added strawberries to my shakes to give it a little extra flavour. Worked well.

After trying Optifast and seeing these were cheaper, thought I’d give the strawberry one a go. Aaagghh, big mistake, doesn’t mix well at all, is very watery and lumpy, had to mix one with trim milk to get it anywhere near palatable ( which defeats the purpose of a diet)
Will stick with Optifast which are smooth and creamy. Shame because it seems like something’s changed the past few months with this product.

I too have been using optislim shakes for ages now and have really enjoyed them up till now. This batch does not mix well and is left with lumpy bits at the bottom. I emailed optislim and sent in two sachets to be tested to be advised this is normal. (Wish I had read all these reviews first). However they sent me a complimentary box as compensation. The next two boxes I brought were exactly the same so I emailed optislim again saying I will not buy them again. This time they agreed there is something wrong and are sending me two more boxes as compensation. Overall I’m happy with their customer service and having read these reviews; clearly there is a faulty batch.

Batch 18 April 2020
This batch is different. I have been using this product for years and this batch does not mix properly (Leaves lumps down the bottom) and froths up too much. Company should take note regarding similar complaints. Not happy, in the bin they go....

Tried Optifast three times rest going in the bin. Shakes too salty absolute waste of money. I would not recomend these to anyone going back on my low carb diet even if it takes my longer to loose weight

I have enjoyed optislim for breakfast for many years but the above batch of best before 18 apr 2020 has not been up to the usual standard. It was thin when mixed and left granules in the bottom. I sent away two sachets to be tested and have been advised that after testing it was perfectly ok to consume ( not the problem I was trying to convey ). I have since purchased 2 separate boxes with different best before dates and found that they were back to the lovely rich, thick, creamy drinks that I was used to drinking.
I will continue to use optislim unless I have another, what I call "faulty" batch.

I've been enjoying Optislim shakes for breakfast for the last couple of years but the last two boxes of chocolate shakes have been terrible. They've obviously changed something, the powder doesn't dissolve properly leaving lumps and a gritty taste. I've emailed the company but had no reply. I won't be buying any more.