Better sleep, starting with your gut

GutSupp is a daily prebiotic powered by clinically studied Bimuno® GOS. Human research found a lower waking cortisol response after three weeks, while customers regularly report more settled sleep, fewer wake-ups and more refreshed mornings.

Research into waking cortisol No melatonin Improves Digestion One tasteless sachet a day Works in 7 days No melatonin Take at any time 60-day money-back guarantee
Research into waking cortisol No melatonin Improves Digestion One tasteless sachet a day Works in 7 days No melatonin Take at any time 60-day money-back guarantee
Research into waking cortisol No melatonin Improves Digestion One tasteless sachet a day Works in 7 days No melatonin Take at any time 60-day money-back guarantee
Research into waking cortisol No melatonin Improves Digestion One tasteless sachet a day Works in 7 days No melatonin Take at any time 60-day money-back guarantee
Research into waking cortisol No melatonin Improves Digestion One tasteless sachet a day Works in 7 days No melatonin Take at any time 60-day money-back guarantee

For many customers, better sleep was the unexpected benefit of looking after their gut.

More settled sleep

Customers regularly describe their sleep as deeper, calmer and less restless after adding GutSupp to their daily routine.

Fewer night-time wake-ups

Many users say they wake less frequently during the night or find it easier to settle back to sleep.

More refreshed mornings

Customers often report waking feeling better rested, clearer and more energised the following day.

Lower waking cortisol

In a placebo-controlled human study, people taking Bimuno GOS had a significantly lower cortisol awakening response after three weeks.

No melatonin or sedatives

GutSupp supports the gut-brain connection without making you feel artificially sleepy or drowsy.

OVER 500 SLEEP-RELATED REVIEWS

Across our Trustpilot reviews, customers repeatedly describe more settled sleep, fewer wake-ups and better-rested mornings.

More settled sleep

Customers regularly describe their sleep as deeper, calmer and less restless after adding GutSupp to their daily routine.

Fewer night-time wake-ups

Many users say they wake less frequently during the night or find it easier to settle back to sleep.

More refreshed mornings

Customers often report waking feeling better rested, clearer and more energised the following day.

Lower waking cortisol

In a placebo-controlled human study, people taking Bimuno GOS had a significantly lower cortisol awakening response after three weeks.

No melatonin or sedatives

GutSupp supports the gut-brain connection without making you feel artificially sleepy or drowsy.

OVER 500 SLEEP-RELATED REVIEWS

Across our Trustpilot reviews, customers repeatedly describe more settled sleep, fewer wake-ups and better-rested mornings.

The evidence behind the gut-sleep connection

Human Cortisol Study

Better Sleep

A lower waking cortisol response after three weeks

Digestive Resilience Study - PMID: 19756029

Stat / ProofReduced incidence and duration of diarrhoea

Supports a more resilient gut

Gut Microbiome Study - PMID: 18326619

Selective increase in beneficial bifidobacteria

Feeds the good bacteria already in your gut

Digestive Comfort Study - PMID: 30109908

Clinical improvements seen within 7 days

Supports calmer, more comfortable digestion

 Digestive Comfort Study - PMID: 19053980

Significant reductions in bloating and gas

Supports calmer, more comfortable digestion

Metabolic Health Study - PMID: 23303873

Improvements in inflammation and metabolic markers

Supports gut health linked to metabolism.

Travel Gut Protection Study - PMID: 28931149

Protection builds after ~7 days of use

Works best when taken consistently

Human Cortisol Study

WHAT WERE THE RESULTS?

In a placebo-controlled study of 45 healthy adults, Bimuno GOS significantly lowered the cortisol awakening response compared with placebo.

https://pubmed.ncbi.nlm.nih.gov/23303873/

Supports healthy gut-brain axis

Studied alongside stress-response markers

What it means for you / benefits

59% of all respondents rated Bimuno’s usefulness for their condition four or five out of five. Self-reported, uncontrolled real-world evidence. Individual results vary.

Digestive Resilience Study

WHAT WERE THE RESULTS?

A randomised, double-blind, placebo-controlled study in 159 travellers found that those taking B-GOS experienced lower incidence and shorter duration of travellers’ diarrhoea, alongside reduced abdominal pain and better overall wellbeing.

  • Large sample size (n=159)
  • Real-world high-stress gut environment (travel)
  • Reduced:
  • Diarrhoea incidence
  • Duration of symptoms
  • Abdominal pain
  • Improved quality-of-life scores

https://pubmed.ncbi.nlm.nih.gov/19756029/

Supports balanced immune responses

Encourages beneficial gut bacteria growth

What it means for you / benefits

Supports gut resilience under stress — useful beyond travel (diet changes, alcohol, busy routines).

Gut Microbiome Study

WHAT WERE THE RESULTS?

A randomised, double-blind, placebo-controlled crossover study in healthy adults demonstrated that B-GOS acts as a selective prebiotic, significantly increasing populations of bifidobacteria without stimulating less desirable bacterial groups.

  • Crossover design (participants act as their own control → stronger data)
  • Selective stimulation of bifidobacteria (key beneficial species)
  • No broad overgrowth of other bacteria → targeted microbiome effect
  • Conducted in healthy adults, showing baseline gut improvement
  • Establishes mechanism of action, not just outcome

https://pubmed.ncbi.nlm.nih.gov/18326619/

Effective from low daily doses

Easy to integrate into routines

What it means for you / benefits

Rather than adding bacteria, it feeds the right ones already in your gut — helping restore balance naturally.

Digestive Comfort Study

WHAT WERE THE RESULTS?

A human intervention study in adults from the general population experiencing bloating, abdominal pain and flatulence found that daily supplementation with B-GOS led to statistically significant reductions in these symptoms within 7 days, with further improvements maintained into week two.

  • Conducted in adults with real-world digestive discomfort (not clinical IBS only)
  • Significant reductions in bloating, flatulence and abdominal pain scores
  • Improvements observed within 1 week, sustained at 2 weeks
  • No significant changes in stool frequency — suggesting targeted symptom relief rather than laxative effect
  • Placebo-controlled design

 https://pubmed.ncbi.nlm.nih.gov/30109908/

Reduced bloating and abdominal discomfort

Improvements observed within 7 days

What it means for you / benefits

You’re likely to feel a difference relatively quickly — particularly less bloating and discomfort — without harsh or disruptive effects on digestion.

IBS Digestive Symptoms

WHAT WERE THE RESULTS?

A randomised, placebo-controlled clinical trial in individuals with IBS showed that daily supplementation with trans-galactooligosaccharide significantly increased levels of beneficial bifidobacteria and improved key symptoms including bloating, flatulence and stool consistency, particularly at a 3.5g daily dose.

  • Conducted in IBS-diagnosed patients (higher symptom severity)
  • Dose-dependent effect, with strongest results at ~3.5g/day
  • Significant improvements in:
  • Bloating
  • Flatulence
  • Stool consistency
  • Demonstrated direct link between microbiome changes and symptom relief
  • Randomised, placebo-controlled design

https://pubmed.ncbi.nlm.nih.gov/19053980/

Increases beneficial bifidobacteria levels

Supports healthier microbiome balance

What it means for you / benefits

If it works in more sensitive, IBS-type guts, it’s strong evidence it can help with everyday bloating and digestive discomfort.

Metabolic Health Study

WHAT WERE THE RESULTS?

A 12-week randomised, double-blind, placebo-controlled crossover study in 45 overweight adults found that B-GOS increased bifidobacteria and led to improvements in markers including C-reactive protein (CRP), insulin levels, total cholesterol and triglycerides.

  • 12-week duration (longer-term intervention)
  • Participants had elevated metabolic risk factors
  • Observed reductions in:
  • CRP (inflammation marker)
  • Insulin
  • Total cholesterol
  • Triglycerides
  • Increased bifidobacteria linked to these changes
  • Suggests gut-driven systemic effects

https://pubmed.ncbi.nlm.nih.gov/23303873/

Supports healthy gut-brain communication

Studied alongside stress-response markers

What it means for you / benefits

Shows gut health doesn’t just affect digestion — it can influence broader health markers linked to inflammation and metabolism.

Travel Gut Protection Study

WHAT WERE THE RESULTS?

A follow-up randomised, placebo-controlled study showed that B-GOS reduced the likelihood of diarrhoea episodes, with protective effects becoming apparent after approximately one week of consistent supplementation.

  • Reinforces time-dependent effect
  • Protection strongest with high compliance
  • Focus on short-duration diarrhoea reduction
  • Complements earlier travel study

https://pubmed.ncbi.nlm.nih.gov/28931149/

Supported by human clinical trials

Backed by decades of research

What it means for you / benefits

This isn’t a quick fix - it works by building your gut’s resilience over time.

GutSupp Daily Prebiotic GutSupp
GutSupp Daily Prebiotic GutSupp
GutSupp Daily Digestive Supplement GutSupp
GutSupp Daily Prebiotic GutSupp
GutSupp Daily Prebiotic GutSupp
GutSupp Daily Digestive Supplement GutSupp
GutSupp Daily Digestive Supplement GutSupp
GutSupp Daily Prebiotic GutSupp
GutSupp Daily Prebiotic GutSupp
GutSupp Daily Prebiotic GutSupp
GutSupp Daily Digestive Supplement GutSupp
GutSupp Daily Prebiotic GutSupp

GutSupp Daily Digestive Supplement

GutSupp is a clinically studied prebiotic fibre designed to support digestive comfort while nourishing beneficial gut bacteria.

Select Flexible Plan:

Delivered on with Standard Shipping
60-day money back guarantee

60-day money back guarantee

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.

When might I notice a difference to my sleep?

Some customers describe changes within the first few days or weeks, while others take longer. Everyone’s gut microbiome is different, so we recommend taking GutSupp consistently and using the full 60-day period to decide whether it is making a noticeable difference for you.

Do I need to take GutSupp before bed?

No. GutSupp does not make you drowsy and can be taken at any time of day. Mix one sachet into hot or cold drinks, yoghurt, porridge or food and take it consistently each day.

How much is shipping?

Free UK delivery on subscription orders. £3.50 for delivery on single purchase orders. Orders are typically dispatched within 24 hours.

Product Benefits

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.

What makes GutSupp different?

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.

Ingredients

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.

Excellent 4.9 out of 5

“Couldn't be without it now”

Gut improvement obvious on day 9

I'm on day 9 of my first purchase of GutSupp. Impressed so far. I'm a really restless sleeper and wake several times a night but my sleep has improved significantly since starting the supplement. I am also someone who suffers from constipation and have had no problems at all since starting GutSupp. My internal plumbing has been working perfectly! Looking forward to seeing how this develops over the coming months. I'm on day 9 of my first purchase of GutSupp. Impressed so far. I'm a really restless sleeper and wake... I'm on day 9 of my first purchase of GutSupp. Impressed so far. I'm a really restless sleeper and wake several times a night but my sleep has improved significantly since starting the supplement. I am also someone who suffers from constipation and have had no problems at all since starting GutSupp. My internal plumbing has been working perfectly! Looking forward to seeing how this develops over the coming months.

I would absolutely recommend GutSupp

I would absolutely recommend GutSupp. I had irritating but not serious IBS symptoms ranging from constipation to diarrhoea. My nutritionist recommended I try gutsupp. I saw results in about 2 weeks and now after 6 weeks of taking GutSupp daily my IBS symptoms are gone. I am converted! I would absolutely recommend GutSupp. I had irritating but not serious IBS symptoms ranging from constipation to diarrhoea. My nutritionist... I would absolutely recommend GutSupp. I had irritating but not serious IBS symptoms ranging from constipation to diarrhoea. My nutritionist recommended I try gutsupp. I saw results in about 2 weeks and now after 6 weeks of taking GutSupp daily my IBS symptoms are gone. I am converted!

Amazed by the effect

I'm amazed by the effect 3 weeks of taking GutSupp has had. I have been a bad sleeper since childhood and now, aged 60, I'm sleeping better than ever before. Thank you! I'm amazed by the effect 3 weeks of taking GutSupp has had. I have been a bad sleeper since childhood... I'm amazed by the effect 3 weeks of taking GutSupp has had. I have been a bad sleeper since childhood and now, aged 60, I'm sleeping better than ever before. Thank you!

Suits my sensitive stomach

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 find that GutSupp suits my sensitive stomach. One a day is enough for me, my stomach feels a lot... 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.

Thinking clearer and calmer

After 3 weeks on GutSupp I can think clearer and I am noticeably more calm in general. After 3 weeks on GutSupp I can think clearer and I am noticeably more calm in general. After 3 weeks on GutSupp I can think clearer and I am noticeably more calm in general.

I have used GutSupp for about two years

I have used GutSupp for about two years now and I have found a really big difference on my digestive system, - much less in the way of stomach cramps and indigestion, particularly over night. and things go through me in a much shorter and less troublesome way. I have also have a lower BP than before. I have used GutSupp for about two years now and I have found a really big difference on my digestive... I have used GutSupp for about two years now and I have found a really big difference on my digestive system, - much less in the way of stomach cramps and indigestion, particularly over night. and things go through me in a much shorter and less troublesome way. I have also have a lower BP than before.

Feel rested again

I used to wake up in the middle of the night and not be able to go back to sleep. GutSupp has changed that - since I started taking it with my tea I sleep through the night, waking refreshed and energised. I used to wake up in the middle of the night and not be able to go back to sleep.... I used to wake up in the middle of the night and not be able to go back to sleep. GutSupp has changed that - since I started taking it with my tea I sleep through the night, waking refreshed and energised.

I really love GutSupp

As a sufferer of IBS, this is the only prebiotic I can take and it's really helped me to feel so much better. I tried all the other prebiotics and they just gave me stomachaches and diarrhea. Not this one. I really love GutSupp. As a sufferer of IBS, this is the only prebiotic I can take and it's really helped me to feel... As a sufferer of IBS, this is the only prebiotic I can take and it's really helped me to feel so much better. I tried all the other prebiotics and they just gave me stomachaches and diarrhea. Not this one. I really love GutSupp.

They are great

Ive had sleeping problems for many years and one night/early morning i saw a program on television which included someone taking gutsupp. I also was having problems with my stomach. I went out the next day to look for some, when i got home i started straight away. After the first week or so I noticed how much better my sleep was. I have been taking gutsupp for years now and would not be without it. Ive had sleeping problems for many years and one night/early morning i saw a program on television which included someone... Ive had sleeping problems for many years and one night/early morning i saw a program on television which included someone taking gutsupp. I also was having problems with my stomach. I went out the next day to look for some, when i got home i started straight away. After the first week or so I noticed how much better my sleep was. I have been taking gutsupp for years now and would not be without it.

Worked wonders

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 regularly suffered with an uncomfortable & bloated stomach which went on for several weeks but since taking GutSupp regularly... 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.

Half a sachet then full sachet

Myself and my wife started with half a sachet each morning for a week then moved to 1 sachet a day and found that after 2 weeks or so my indigestion and wind pain at night has all but gone and we both seem to be much more regular as well, would highly recommend this product to anyone who suffers from indigestion or bloating. Myself and my wife started with half a sachet each morning for a week then moved to 1 sachet a... Myself and my wife started with half a sachet each morning for a week then moved to 1 sachet a day and found that after 2 weeks or so my indigestion and wind pain at night has all but gone and we both seem to be much more regular as well, would highly recommend this product to anyone who suffers from indigestion or bloating.

Excellent product

I feel so much better since taking GutSupp. I have more energy and don't feel so tired even after working long shifts in a NHS hospital. I feel so much better since taking GutSupp. I have more energy and don't feel so tired even after working... I feel so much better since taking GutSupp. I have more energy and don't feel so tired even after working long shifts in a NHS hospital.

Definite improvement

I have been using GutSupp daily for the past month - really good results. Have helped with previously sick tummy, but now feel so much better, with my energy levels increased. I have been using GutSupp daily for the past month - really good results. Have helped with previously sick tummy,... I have been using GutSupp daily for the past month - really good results. Have helped with previously sick tummy, but now feel so much better, with my energy levels increased.

Perhaps a little less stress

My husband thinks I'm a little brighter. It has been a very busy month and there have been difficult situations and conversations. I have felt more calm, even and happy emotionally. I've not had a cold (the kids and husband had several) and that's quite usual for me too. I've been more 'zen' through it all. My husband thinks I'm a little brighter. It has been a very busy month and there have been difficult situations... My husband thinks I'm a little brighter. It has been a very busy month and there have been difficult situations and conversations. I have felt more calm, even and happy emotionally. I've not had a cold (the kids and husband had several) and that's quite usual for me too. I've been more 'zen' through it all.

Definitely a keeper

The effects of the product itself are outstanding. I feel more energised, experience an overall better mood and wake up early and refreshed. After trying all sorts of vitamins and supplements over the years, a prebiotic like this one is definitely going to remain part of the daily routine. The effects of the product itself are outstanding. I feel more energised, experience an overall better mood and wake up... The effects of the product itself are outstanding. I feel more energised, experience an overall better mood and wake up early and refreshed. After trying all sorts of vitamins and supplements over the years, a prebiotic like this one is definitely going to remain part of the daily routine.

Backed by 20+ years of gut health research

Why the gut-sleep connection is worth taking seriously

Powered by clinically studied Bimuno® GOS, GutSupp works by feeding the beneficial bacteria already living in your gut. Backed by human clinical research focused on digestive comfort, gut balance and microbiome support.

20+

human clinical trials on the Bimuno® GOS active ingredient

130+

scientific publications across 20 years of research

7 days

the timeframe shown to increase beneficial bifidobacteria in clinical studies

The Science Behind GutSupp

What to expect during your 60-day gut-sleep reset

Days 1-7

GutSupp begins feeding the beneficial bacteria already in your gut. Some people notice digestive changes as their gut adjusts.

Weeks 2 to 3

The Oxford study found a change in the cortisol awakening response after three weeks. Customer reviews also describe sleep changes during the first few weeks.

Weeks 4 to 8

Continue taking GutSupp consistently and notice how settled your sleep feels, how often you wake and how rested you feel in the morning.

By day 60

Decide whether GutSupp has made a noticeable difference for you. If not, contact us under our 60-day money-back guarantee.
Start My Gut-Sleep Reset

Everything you need to know before starting GutSupp

Learn how GutSupp works, what to expect and why thousands take it daily for digestive comfort and gut balance.

GutSupp is not a sleeping tablet. It is a daily prebiotic that feeds beneficial gut bacteria involved in gut-brain communication. Human research has found a lower waking cortisol response after three weeks, while many customers report more settled sleep and fewer night-time wake-ups. Individual results vary.

GutSupp is powdered by Bimuno that contains GOS. Galactooligosaccharides (GOS) are a high fibre prebiotic derived from lactose and is proven to stimulate the growth of good bacteria in your gut.

No. GutSupp contains Bimuno® GOS and does not contain melatonin or sedative ingredients.

No. GutSupp is not designed to make you immediately sleepy or drowsy. It can be taken at any time of day.

You do not need to. Take one sachet at whatever time makes it easiest to remain consistent.

Some customers notice changes during the first few weeks, but everyone’s microbiome is different. We recommend taking it consistently and using the full 60-day guarantee period to assess your experience.

Gutsupp is a prebiotic. Prebiotics can be thought of as the food for the 'good types of
bacteria in your gut such as bifidobacteria that help balance your microbiome.
Probiotics are 'live' bacteria. The issue with many probiotic supplements is that they
don't reach your gut intact and if they do, lack the food they need to thrive and be
effective.

For best results Gutsupp should be taken daily. In the first 7 days, you might notice
some slight tummy gurgling, a positive sign that your gut microbiome is starting to reset.
It's very important that you continue to feed the good bacteria in your gut.

GutSupp is a tasteless powder that dissolves easily on food or in drink. Simply add to
your morning hot drink or juice, or add to your porridge or yoghurt bowl.

Yes, Gutsupp can help your symptoms of IBS! If you have a particularly sensitive stomach we recommend taking a ½ sachet for the first 7-10 days to let your gut gradually transition.

Yes you can! Gutsupp transitions through the gut to the large intestine (colon) and is
not absorbed to other areas of your body.

Why GutSupp works differently

GutSupp

Traditional Prebiotics

130+ published studies

Limited published research

20+ human clinical trials

Evidence varies by product

Clinically studied ingredient

Often proprietary blends

Simple daily sachet routine

Multiple capsules daily

Feeds beneficial gut bacteria
Supports digestive comfort
Unflavoured and easy to mix

Often flavoured

COMPETITIVELY PRICED

From £20/mo

£40+/mo

Try the gut-sleep connection for yourself

Take GutSupp consistently for up to 60 days. If you do not feel a noticeable difference, email us and we will give you a full refund.

Save 40% + free UK delivery