ió Gut Health in numbers
- Each 500ml bottle of ió provides 20% of an adult's recommended daily fibre intake and 4.5g of prebiotic fibre, which the FAQ gives as 100% of the recommended daily prebiotics intake.
- One 500ml bottle contains 0.6g of sugar, 21 kcal and 1g of carbs. The FAQ answers yes to the questions whether ió is vegan and keto-friendly.
- The Mix Box contains 12 x 500ml bottles, 6 Lemon & Lime and 6 Strawberry, at a regular price of £28.99 with tax included. Strawberry and Lemon & Lime are also sold as single-flavour boxes of 12 x 500ml.
- Refunds must be requested no later than 14 days after you receive your goods; after ió replies you have a further 14 days to return them, and a full refund is issued within 10 days of the goods arriving.
- The PET bottles are made with 25% recycled plastic and are 100% recyclable. The FAQ announces an ió stick pack (sachet) range for 2026, to be mixed with your own water in your own bottle.
- ió describes itself as the UK's first prebiotic fibre infused still drink. The brand of chicory root fibre (inulin) it uses has two health claims approved by food authorities in the UK and EU.
- In a Glasgow Caledonian University test, the friendly bacteria S. Boulardii grew 4 million percent higher and B. Coagulans 25 thousand percent higher when fed ió compared with regular flavoured water.
- After drinking ió daily for 12 days, 90% would recommend it to family and friends, 75% of those with digestive issues experienced improvements and 73% reported improved sleep. The company's mission since 2022 has been to put proven gut health in a bottle.
Sources: FAQ, Homepage, Refund policy, About, Terms of service.
Questions about ió Gut Health
What does ió Gut Health sell?
ió Gut Health sells a prebiotic gut health drink in 500ml bottles, offered in boxes of 12. The flavours are Lemon & Lime and Strawberry, available as single-flavour boxes or as the Mix Box with 6 bottles of each at a regular price of £28.99. Each bottle is described as delivering 100% of daily prebiotics, 20% of daily fibre and only 21 calories, with no added sugar or artificial ingredients.
How long do I have to return an ió Gut Health order?
You must request a refund no later than 14 days after the day you receive your goods, by emailing returns@iofibrewater.co.uk with your name, address and order number. Once ió replies with instructions, you have a further 14 days to send the goods back. Orders must be unused and in their original condition and packaging, and the full refund follows within 10 days of the goods arriving.
Who pays the return postage at ió Gut Health?
You do, unless the goods are faulty or you received the wrong goods: only in those cases can the postage for sending your order back be refunded. ió recommends a tracked delivery service, because it cannot be held liable for goods lost in transit. After arrival the goods are inspected to confirm they are unused and in their original condition and packaging before the refund is issued.
What happens if ió Gut Health sends faulty or wrong goods?
Contact returns@iofibrewater.co.uk as soon as possible with your order details and photo evidence of the incorrect goods or the damage; without photographic proof the claim cannot be accepted. Once ió accepts the claim, you choose between a full refund and new goods of the equivalent or same value. If you are asked to return the goods, you must do so no later than 14 days after receiving the return address.
What ingredients are in ió Gut Health Lemon & Lime?
The Lemon & Lime drink contains filtered water, chicory root fibre (inulin), corn fibre, citric acid, natural flavourings and steviol glycosides from Stevia as sweetener. According to the FAQ, all ingredients in ió Gut Health Drink are natural in origin, with no artificial sweeteners, preservatives, flavours or colours. The water used is ultra-purified, and the FAQ also answers yes to the drink being gluten-free.
Is ió Gut Health suitable for people with diabetes?
The FAQ says yes: one 500ml bottle contains 0.6g of sugar, 21 kcal and 1g of carbs. It adds that the inulin used in ió is backed by an authorised EU and GB health claim for lowering and slowing blood glucose rise. The FAQ text is the merchant's own statement; if you manage a medical condition, the bottle's figures help you compare it with what you already drink.
Which fibre does ió Gut Health use?
ió uses chicory root fibre (inulin), a prebiotic fibre manufactured by Beneo GmbH, which the FAQ says led the way in achieving two authorised UK and EU health claims for chicory root fibre. The FAQ cites over 4,000 studies on prebiotics, more than 1,000 of them specifically on chicory root fibre or inulin, covering digestive health, sleep, mood and the risk of several diseases.
Who operates the ió Gut Health website?
The site is owned and operated by The Prebiotic Company Ltd, which also holds or licenses all rights in the website, including copyright. Queries about the terms and conditions, comments or complaints go to hello@iofibrewater.co.uk. To process an order you must provide an email address, and ió confirms receipt of your order and its details by email as soon as possible.
What happens if an ió Gut Health box is out of stock?
ió contacts you by email or phone, if you have given a number, when the goods you ordered are not available from stock. You can then choose to wait until the item is back in stock or to cancel your order. All orders are subject to acceptance and availability, so a confirmation email alone does not guarantee dispatch.
Can ió Gut Health change the price after I order?
Prices can change at any time, but changes do not affect orders for which ió has already sent a dispatch confirmation. If an order cannot be accepted at the price shown, ió emails you an offer at the price stated in that email and says how long the offer remains valid. Orders are only processed if there are no material errors in the product description or price.
ió Gut Health: a prebiotic still drink for a daily fibre boost
ió Gut Health is the online shop of The Prebiotic Company Ltd, which sells its own prebiotic gut health drink in clear 500ml bottles. It describes ió as the UK's first prebiotic fibre infused still drink and aims it at people who want to raise their fibre intake without changing their meals: each bottle carries 20% of the recommended daily fibre and 100% of the daily prebiotics.
The drink is sold in boxes of 12 bottles, and a voucher code from save-up.co.uk takes money off your order at checkout on iofibrewater.co.uk.
Two flavours in boxes of 12
The range is deliberately small. ió comes in Lemon & Lime and Strawberry, each made with a light splash of natural fruit flavour and sweetened with steviol glycosides from Stevia. You can order a single flavour or try both in one box. Every bottle has 21 kcal, 0.6g of sugar and 1g of carbs, and the FAQ confirms the drink is vegan and keto-friendly. Besides the shop, the site menu lists a Gut Health Quiz, Subscribe & Save, Wholesale and a customer log-in.
- Mix Box: 6 x Lemon & Lime and 6 x Strawberry, 12 x 500ml
- Strawberry: 12 x 500ml
- Lemon & Lime: 12 x 500ml
- Ingredients of natural origin, no artificial sweeteners, preservatives, flavours or colours
Chicory root fibre and university testing
What sets ió apart is how closely it ties itself to research. The prebiotic fibre in the bottle is chicory root fibre (inulin) made by Beneo GmbH, a fibre with two health claims approved in the UK and EU: one for maintaining a healthy digestive system and one for lowering and slowing blood glucose rise. Glasgow Caledonian University tested the drink and found it feeds friendly bacteria far more than regular flavoured water, and the product pages refer to studies by Glasgow Caledonian and Roehampton University. In the company's own 12-day challenge, 90% said they would recommend ió to family and friends.
Ordering, payment and returns
Prices on the site include VAT, and the whole price has to be paid before an order can be accepted; the contract only becomes binding when the goods are dispatched. If something is out of stock, ió contacts you and lets you wait or cancel. Unused boxes in their original packaging can be returned: ask by email within 14 days of receipt, then send them back within a further 14 days, ideally tracked. Return postage is refunded only for faulty or wrong goods, which need photo evidence, and the full refund arrives within 10 days of the return being received.
How to save on your ió order
Because every product is a box of 12 bottles, a voucher code from this page applies to the whole box at checkout, so the saving grows with the number of boxes in your basket. The site menu also lists Subscribe & Save and a Newsletter, which are worth a look if you plan to drink ió regularly. Check the deduction before you pay, as the full price is charged at the order stage. If you shop for food and drink more widely, save-up.co.uk also lists King & Country Voucher Codes, Battle Bites Discount Codes, a Prestige Hampers Promo Code and a Chef Akila’s Gourmet Ready Meals Voucher Code among its further Food & Drink shops.
Recyclable bottles and a sachet range planned for 2026
ió chose clear PET bottles because buyers wanted to see that the drink has no floating bits and wanted a bottle that suits exercise and grab-and-go use. The bottles are made with 25% recycled plastic and are 100% recyclable. For 2026 the FAQ announces an ió stick pack range in sachets, which you mix with your own water in your own bottle, so you carry the fibre rather than the bottled water.