Thought we would give Iofibrewater a try after it was recommended to me. Everything from ordering on the website to payment and delivery was top class. We tried the strawberry flavour and the lemon... See more
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Review summary
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New label, improved flavour, received latest subscription order today. Always prompt, delivered straight into my garage. Always easy to deal with these guys. Always delicious to drink, and always sati... See more
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Arrived well packaged and very quickly. Was worried the flavours would be OTT but the lime is very subtle (thank goodness) and the strawberry is muted. Got the lemon and lime first and a mixed box nex... See more
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I’ve been a fan of ió drinks for a while now, and they’ve become a regular part of my routine. I love that they make it so easy to boost my daily fibre intake with no effort, no fuss, just a genuin... See more
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Company details
Written by the company
Meet ió: Award-Winning Gut-Healthy Hydration. At The Prebiotic Company Ltd, we’re obsessed with gut health, and ió is our breakthrough. Winner of the World Best Drink Innovation Award, ió isn’t just a drink, it’s hydration with purpose. Powered by science and designed for your gut, ió delivers 100% of your daily prebiotics and 20% of your fibre RDI in every bottle. It’s a wise choice for those seeking improved digestive health, but the benefits don’t stop there. Clinical studies show ió helps lower blood sugar levels, boost mood and sleep, support weight management by reducing BMI, and increase friendly gut bacteria (probiotics). It’s also proven to ease IBS, bloating, and constipation. ió is crystal-clear with a light burst of natural fruit flavour: no artificial ingredients, just clean hydration. With only 0.6g of sugar, it’s keto-friendly, diabetic-safe, and 100% vegan. Research from our ió 12-Day Challenge shows that by Day 4, participants feel fuller for longer, eat less at meals, snack less, and experience fewer digestive issues. Many report improved regularity, for themselves and their kids, along with better sleep and a more balanced mood. Making the switch to ió is easy. It’s a simple, enjoyable upgrade to your daily drink. It's refreshing, delicious, and proven to do real good for your body. ió doesn’t just taste great...it works. Try it for yourself and see why so many people say they love ió. Your gut will thank you.
Contact info
Third Floor, 3 Hill Street, EH2 3JP, Edinburgh, United Kingdom
- hello@iofibrewater.co.uk
- iofibrewater.co.uk
4.7
Excellent
130 reviews
Asks customers to review
This company invites their customers to review, whether positive or negative
Replied to 100% of negative reviews
Typically replies within 48 hours
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The items haven’t been delivered
The items hadn’t been delivered by the courier but Io dealt with it swiftly and replaced the order.
Excellent product and brand highly recommended
April 20, 2026
Reply from ió Gut Health Drink
Hi Simon,
We’re really sorry to hear that your order hasn’t arrived, that’s definitely not the experience we want for you.
We haven’t received any prior contact from you about this, so we weren’t aware there was an issue. Like all ecommerce businesses, we do rely on courier tracking updates and assume delivery has been completed unless we’re told otherwise.
That said, we’re now looking into this as a priority. We’ll investigate what’s happened with the courier and update you as soon as possible. If your order can’t be located, we will of course arrange a replacement.
Customer service is incredibly important to us, and we’ll make sure this is resolved for you.
Best regards,
Team ió
It finally tastes great again
It finally tastes great again. I stopped buying it when they changed the taste a while ago as I really didn't like the new taste but I am beyond delighted they have changed it so that it now tastes great again. And I love all the goodness in the drink too. Great product!
April 22, 2026
Reply from ió Gut Health Drink
Hi there, thank you so much for coming back to ió. We're delighted that you are enjoying the new recipe.
When we made our recipe even cleaner, it was a challenge to get the recipe just right, so after months of new recipe development and launch, we're glad to know that it's ticked your boxes!
Gutfully yours,
Team ió 💧
That good my son keeps taking one and…
That good my son keeps taking one and he’s not keen on flavoured water but this lemon & lime one is just perfect !!
April 17, 2026
Reply from ió Gut Health Drink
Hi Wendy, thank you so much for taking the time to leave a review. We're delighted to know your son is enjoying our gut-loving drink!
Gutfully yours,
Team ió ❤️
Great product
Great product, good price, really notice the improvements to my body. Love the flexiblity of your orders when you sign up for deliveries.
March 30, 2026
Reply from ió Gut Health Drink
Thank you so much for your glowing review, Eleanor! We are delighted that you are experiencing noticebakr improvements with our gut-loving drink and appreciate you taking the time to review us.
Gutfully yours,
Team io
Loved by all our family
This is the easiest, tastiest, healthiest way I've come across to get decent water into my body. One of these in the morning keeps me going till well into the afternoon. The flavour is subtle and natural, it's not sugary or sacchariney or sickly like other flavoured waters. I love that the lime flavour comes through. My mum started drinking this when she was in hospital two years ago and it continues to be the best and easiest way I have of getting her to drink at least 500ml of water every day. A friend of mine with diabetes found it lowered her blood sugar levels, and the rest of the family all look for it in the fridge when they come to visit.
March 30, 2026
Unprompted review
Reply from ió Gut Health Drink
Wowee! Thank you so much for this amazing review! 😁
We're delighted to know that our gut health drink is making such a great impression with you and your family.
Happy sipping!💧
LOVE IT
Been drinking this for quite a while and loving it. Certainly helping a 73 year old to keep going!
February 12, 2026
Reply from ió Gut Health Drink
Hi Angela,
This absolutely made our day. Thank you so much for taking the time to share this.
We’re thrilled to hear you’ve been enjoying ió for a while and that it’s helping you keep going strong at 73. That’s exactly why we do what we do.
Your support means a lot to us, and we’re so glad it’s become part of your routine. Here’s to many more energetic days ahead!
Team ió ❤️
Took advantage of an offer.
Took advantage of an offer.
Delivered promptly.
My husband is the one using these the most to get more fibre in his diet and help his gut bacteria as the meds he's on tend to affect his abdomen
January 26, 2026
Reply from ió Gut Health Drink
Thank you so much for your review. We’re really glad to hear your order arrived promptly.
It’s great to know your husband is finding ió helpful for increasing his fibre intake and supporting his gut, especially while managing medication that can affect digestion. That can be challenging, so we’re pleased it’s fitting into his routine.
If you ever have any questions or need support along the way, we’re always here to help. Thanks again for sharing your experience.
Gutfully yours,
Team ió 💧
Order arrival
My order was delayed. Thank you to Alyssa for updating me on the delay. Happy to say my order has arrived and i am happy to recommend this product. Have been a customer for several months and look forward to continuing being a customer. Thanks sgain.
January 9, 2026
Reply from ió Gut Health Drink
Hi Pauline,
Thank you so much for your patience as we worked through issues with the courier.
We're delighted that you're enjoying ió and really appreciate your support.
Gutflully yours,
Team ió
Great product
Definitely helps with bloating and ibs symptoms, both flavours taste good and means I’m upping my daily water and fibre intake 👍 buy regularly now.
January 5, 2026
Reply from ió Gut Health Drink
Hi Mandy,
That's great news you're finding improvements in bloating and IBS with ió. Whoop whoop!
Thank you so much for your review, we really appreciate you taking the time to do this.
Happy sipping in 2026.
Gutfully yours,
Team ió ❤️
Reply from ió Gut Health Drink
Hi Bernadette,
Thank you and your gut for loving ió and taking a moment to share about us.
Gutfully yours,
Team ió ❤️
Reply from ió Gut Health Drink
Thank you so much for your review. We're delighted you're enjoying ió!
Gutfully yours,
Team ió ❤️
Keeping my gut under control
I have been using IO for about 5 months now. There are two reasons that I have found it really useful:
- The first is that I used it alongside Mounjaro and it has really helped to balance out aghainst the smaller amounts that I found my self eating. So between Mounjaro and IO In have lost about 6 Stone.
- The other recommendation was after a particularly bad bowel upset (probably the water when abroad). I found IO was great help to calm the stomach in a managed way and restore predicatbility in my movements.
Thank you IO. A great help to my health.
December 15, 2025
Unprompted review
Reply from ió Gut Health Drink
Thank you so much for sharing about your journey, David. That's brilliant news about how ió has been a great partner with Mounjaro and helped with a dodgy tum, too!
Happy sipping!
Gutfully yours,
Team ió
EXCELLENT
Still loving this drink but have reduced it to every third day to suit my needs.I can highly recommend
November 3, 2025
Reply from ió Gut Health Drink
That's amazing, Elaine! We're delighted ió continues to make a difference for you.
Happy sipping!
Team ió 😊💧
Brilliant company
Always a pleasure to deal with io Gut Health Drinks, they taste amazing, are refreshing and are doing me and my husband good.
October 20, 2025
Reply from ió Gut Health Drink
Hi Elaine,
Thank you so much for writing a review. We're delighted that you're enjoying the taste and noticing the benefits.
Keep on sippin' 😊
Team ió💧
Great for your gut health and tasty too
I’ve been a fan of ió drinks for a while now, and they’ve become a regular part of my routine. I love that they make it so easy to boost my daily fibre intake with no effort, no fuss, just a genuinely enjoyable drink that’s good for you too.
The flavours are light and refreshing (not at all artificial-tasting, which is a big plus), and I really appreciate how clean and natural they taste. It’s such a simple swap that supports gut health and overall wellbeing - I wouldn’t be without them now.
October 10, 2025
Unprompted review
Reply from ió Gut Health Drink
Wowee, Nicola! Thank you for such a glowing review! 🌟
We're thrilled to hear that ió has become a staple in your routine. It's exactly what we aim for: effortless, enjoyable, and packed with feel-good benefits. 💪🧡
Cheers to gut health, clean ingredients, and drinks that actually taste good. We’re so glad you’re part of the ió fam – here’s to many more refreshing sips! 🥂✨
Gutfully yours,
Team ió💧
12 day challenge
I tried the 12 day challenge while I was replacing the bathroom. My energy levels were good and my food craving swung to healthier meals and smaller portions.
I’m now looking into the science of gut health.
I highly recommend.
September 19, 2025
Unprompted review
Reply from ió Gut Health Drink
Hi Jamie, that's great news! We hope ió got you through your bathroon reno and becomes part of your daily routine, too. Thank you so much for taking the time to share about ió. And yep, gut health is truly fascinating!
Gutfully yours,
Team ió 💧
After a recommendation I bought these…
After a recommendation I bought these drinks and I must say I was really surprised abiit how good they tasted.
Only now, that i dont have any left that I can feel I miss them for my daily routine and overall health.
Fast delivery too, overall a great product and great service
September 3, 2025
Reply from ió Gut Health Drink
Thanks for giving us a try, Garry!
We’re so pleased to hear you enjoyed the taste and that the drinks quickly became part of your daily routine. That’s exactly what we set out to do — make supporting your gut and overall health simple, enjoyable, and easy to stick with.
To make sure you never run out, we offer a subscription with 22% off, and you can pause or cancel anytime.😁
Plus, we’ll keep the delivery fast and service smooth, so you can always feel the benefits without the gap.
Gutfully yours,
Team ió 💧
Surprisingly pleasant
Arrived well packaged and very quickly. Was worried the flavours would be OTT but the lime is very subtle (thank goodness) and the strawberry is muted. Got the lemon and lime first and a mixed box next and have whichever suits my mood in the morning best! Hasn't outwardly affected me (good!) but is an easy way to have an additional portion of fibre a day and encourages proper hydration. Low in calories so will probably have this longer term.
September 16, 2025
Reply from ió Gut Health Drink
Thanks so much for your thoughtful review! We’re really glad to hear the flavours hit the right balance for you and that you’re enjoying the variety depending on your mood.
Knowing it fits into your routine is exactly what we aimed for... a simple, easy way to boost fibre and support gut and overall health. It’s great that it feels effortless to include day to day, and we really appreciate you sharing your experience with us!
Happy sipping!
Gutfully yours,
Team ió 💧
Was sceptical about this drink due to…
Was sceptical about this drink due to most thing not really working for me, within the first few bottles I noticed bloating had reduced and did not have a single urge to snack. After the 12 bottles, I had lost significant weight and it was mainly bloating. I’ve just ordered my second batch. Spot on product. Would love a new flavour range !!
August 6, 2025
Reply from ió Gut Health Drink
Hi Amaan,
Thank you so much for sharing your experience – we’re thrilled to hear you noticed results so quickly and that ió has helped with bloating and curbing snacking. It’s always exciting to hear from people who were sceptical at first but are now seeing the benefits for themselves.
We’ve actually developed a few more flavours behind the scenes, and there’s also a brand-new product in the pipeline. They’re not ready for launch just yet, but we’re excited for the day we can share them with you.
Thanks again for your support and for coming back for round two!
Gutfully yours,
Team ió 💧♥️
Love the look and new taste
IO has had a great rebrand love the new bottles but even better is the new taste. More natural and subtle flavour which I prefer. Its is great thanks IO 👍😀
July 9, 2025
Unprompted review
Reply from ió Gut Health Drink
Hi Wendy, thank you so much for your glowing review!
We're delighted you not only love the new branding, but most importantly you're loving the new taste! Yay! 💗😊
Gutfully yours,
Team ió 💧
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