One tasteless sachet of prebiotic powder, powered by Bimuno GOS, to nourish beneficial gut bacteria. Mix it into the food or drink you already enjoy.
Bimuno GOS, studied for digestive comfort.
Nourishes beneficial bifidobacteria in your gut.
Powered by Bimuno GOS, researched in human clinical trials.
Tasteless. Easy to mix into food or drinks.
4.8/5 on Trustpilot 50,000+ happy customers
Clinically proven prebiotic powder, powered by Bimuno GOS, that nourishes beneficial gut bacteria to support digestive comfort.
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Most customers see results in 2-4 weeks. If you do not feel noticeable improvements within 60 days, simply email us and we will give you a full refund. Full guarantee details
“Good gut health isn't built overnight, it's the result of small, consistent actions. GutSupp helps support that process by feeding the gut ecosystem in a simple, sustainable way that clients can realistically maintain.”
Many people begin noticing improvements in digestive comfort, bloating and overall gut balance within the first 7 days of daily use. Clinical studies on Bimuno GOS have shown increases in beneficial gut bacteria within this timeframe.
Because everyone’s gut microbiome is different, results can vary. Some people notice changes sooner, while others experience more noticeable improvements with continued daily use over 2–4 weeks. For best results, GutSupp should be taken consistently every day.
Take one sachet daily and stir it into any cold or room-temperature food or drink - coffee, smoothies, yoghurt or water. It’s unflavoured, heat-stable and dissolves easily, so it fits seamlessly into your routine. Consistency is key, so take it at any time of day, morning or evening, as long as you take it daily.
Supports digestive comfort and regularity by nourishing beneficial gut bacteria, helping to restore balance in the gut. A healthier gut may also support better sleep through the gut-brain connection, strengthen immune function, and contribute to improved daily energy and overall wellbeing.
GutSupp is backed by over 100 scientific publications and 20+ human trials, making it one of the most studied prebiotics of its kind. It works quickly, increasing beneficial gut bacteria in as little as 7 days, while selectively feeding the bacteria your gut actually needs - not everything indiscriminately. Plus, it’s effortless to use, with a tasteless, heat-stable formula that fits easily into your daily routine.
GutSupp is made of Bimuno Powder (Galactooligosaccharides (GOS) derived from lactose (milk), galactose (milk). Allergens are marked in bold.
The Bimuno technology is a blend of non-digestible Galactooligosaccharides (GOS) that passes through the upper gastrointestinal tract until it reaches the colon, where it enhances the production and activity of beneficial gut bacteria.
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★★★★★
“I have used GutSupp (formerly Bimuno) for several years and found it very helpful for my IBS and delicate tummy. I use with my cereal to set me up for the day. Great regular delivery & communications. If you need to delay delivery it is very easy to implement. Highly recommended”
★★★★★
“I have been using it for about two years on the recommendation of my Consultant Gastroenterologist. I have tried numerous prebiotics and probiotics over the years with zero results, so I was extremely skeptical. Since starting Bimuno I really have no gastro problems at all now - no IBS, no reflux and I no longer need the medication I was taking.”
★★★★★
“Been using GutSupp/Bimuno for a number of years now, I suffered with IBS before it was really a known thing, took a number of years to be diagnosed, anyway I recommend it as I rarely have any IBS problems and believe that it has had a significant effect on my improvement.”
★★★★★
“Absolutely love my GutSupp and have found it REALLY effective at controlling (stopping) my insomnia! It’s completely tasteless and just one sachet a day has mostly solved all my sleep issues. Within days of taking it I was sleeping at night, even dreaming!!”
★★★★★
“Started taking GutSupp for gut health but the biggest difference has actually been my sleep. I’m falling asleep quicker and staying asleep through the night. Didn’t expect that benefit at all.”
★★★★★
“Was recommended for gut issues but after a few weeks I noticed my sleep had improved too. I’m not waking up as much in the night and generally feel more refreshed in the mornings. Definitely something I’ll continue with.”
★★★★★
“I have been using the prebiotic for a number of years and my tummy has improved significantly and I start each day with a sachet in my coffee. Great if you have had to take antibiotics as tummy rebalances quickly and in general a huge reduction in bloating, gas and pain overall. Only good things from using this.”
★★★★★
“GutSupp/Bimuno has made such a difference for me. My bloating reduced a lot & I have a regular cycle. It is a great product & easy to drink with water or to add into a smoothie or something!”
★★★★★
“GutSupp…for me, has been a game changer. A lot less bloating but the best part is improved sleep! I will not be without this!”
“I find that GutSupp suits my sensitive stomach. One a day is enough for me, my stomach feels a lot more comfortable, less bloated. Excellent product.”
“I regularly suffered with an uncomfortable & bloated stomach which went on for several weeks but since taking GutSupp regularly these symptoms are a rare occurrence.”
“I tried all the other prebiotics and they just gave me stomachaches and diarrhea. Not this one. I really love GutSupp.”
A little daily care for your gut, in one simple sachet.
Prebiotics feed beneficial gut bacteria. Probiotics add live bacteria.
Mix the tasteless powder into your usual food or drink.
Bimuno GOS is a prebiotic that feeds the beneficial bacteria already in your gut.
Nourish your beneficial gut bacteria as part of your daily routine to support digestive comfort.
Explore three human studies behind the prebiotic ingredient, with the findings and context in plain English.
Vulevic et al. · 2018
In a placebo-controlled study, adults taking B-GOS reported lower bloating, wind and abdominal pain scores. These findings relate to the ingredient and study conditions; individual responses vary.
How it was studied: A randomised, double-blind, placebo-controlled crossover study. Each participant received both treatments, separated by a two-week washout. Symptom scores were lower by the end of week one and remained lower at week two.
What to keep in mind: The study selected adults with digestive symptoms and used short treatment periods. It found no change in stool frequency, stool consistency, quality of life or mood. The researchers included ingredient-supplier affiliations and the study received supplier funding.
Depeint et al. · 2008
A controlled study in healthy adults found that the studied GOS mixture increased the proportion of beneficial bifidobacteria. It measured changes in gut bacteria, rather than establishing a symptom benefit for everyone.
How it was studied: A randomised, double-blind, placebo-controlled crossover study. There were 59 volunteers across two phases, with 30 in the phase that compared the novel GOS doses. Bifidobacteria were measured in stool samples.
What to keep in mind: This was a short study of changes in bacteria at specific doses. A microbiome change does not establish every proposed health benefit or predict how an individual will feel. The study received ingredient-supplier funding.
Silk et al. · 2009
Researchers found higher levels of bifidobacteria in people with IBS taking the studied prebiotic. At the 3.5g daily dose, several digestive symptom scores also improved.
How it was studied: A randomised, single-centre controlled study with parallel groups and crossover treatment periods. At 3.5g daily, researchers reported improvements in bloating, wind, stool consistency and overall symptom scores. A published correction updates the results table.
What to keep in mind: This small study involved people with diagnosed IBS and tested specific preparations and doses. The two doses produced different findings, so the results should not be generalised to everyone with digestive discomfort or to the current GutSupp sachet.
These studies examined B-GOS or related GOS preparations at the doses shown, rather than the finished GutSupp product. Participants, doses and study conditions differ. Individual results vary.
Dietitian Sienna Bliss shares her daily routine and adds GutSupp to a smoothie.
How to use GutSupp
No new drink to learn to love. Add GutSupp to the food or drink you already enjoy.
Your daily serving, ready to go.
Hot or cold drinks, yoghurt, porridge or a smoothie. GutSupp is tasteless and easy to mix.
Keep your box beside your breakfast essentials to make your daily sachet easy to remember.
Choose your supply“It fits really easily into my morning routine. I can’t taste it on my porridge.”
Sienna Bliss · Dietitian
Suitability, orders and the support that comes with them.
GutSupp is vegetarian and gluten-free. It is derived from milk and contains milk, so it is not vegan or suitable for a milk allergy. Always check the current ingredients and allergen information on your pack.
B-GOS has been studied in people with IBS, but tolerance and symptoms vary. Ask your GP or registered dietitian whether it suits you, particularly if you follow a low-FODMAP diet. During pregnancy or breastfeeding, check with your midwife, GP or pharmacist before starting a supplement.
GutSupp is tasteless. Mix one sachet daily into your usual hot or cold drink, yoghurt, porridge or other food. Follow the directions on your pack.
Everyone responds differently. Consistent daily use matters, but there is no fixed deadline for noticing a change. Follow the pack directions. If symptoms persist or worsen, speak to a healthcare professional.
Your full selected supply arrives together: 30 sachets in 1 box, 90 in 3 boxes or 180 in 6 boxes. A 3-box order includes a free travel mug; a 6-box order includes a free travel mug and electric whisk. These starter gifts apply to subscriptions and single purchases. A 1-box order has no gifts, and gifts do not repeat on renewals.
You pay for your full selected supply when you order. A one-time purchase is charged once. A subscription renews at the price and interval shown for your selection and at checkout. Daily prices help you compare options; they are not daily charges.
Yes. Use Manage Subscription to manage your plan, or email hello@gutsupp.com. Make changes before the next payment is taken. If a payment has already been taken, contact us promptly so we can check whether the order can still be stopped.
Subscriptions include free tracked UK delivery. For one-time purchases, delivery is £3.50 or free on orders over £40. Checkout confirms the delivery options for your address.
If you do not feel noticeable improvements, email hello@gutsupp.com within 60 days of receiving your order, with your order number or proof of purchase. The guarantee covers opened and tried GutSupp products bought directly from gutsupp.com. You do not need to return used or empty sachets.
A guarantee claim does not automatically cancel a subscription. Read the full guarantee details.