The Trusted Leader in Gastrointestinal Clinical Trials for Medicines, Medical Devices, Food Supplements and Digestive Health Products
At the Functional Gut Clinic, we specialise in clinical trials for digestive health that go further than standard services. As the UK’s largest accredited gastrointestinal (GI) physiology service, we deliver trials that are scientifically rigorous, commercially impactful and tailored to your business.
Our gold-standard diagnostic tools and expert clinical team, combined with fast recruitment and high retention rates enable us to conduct research that fits your budget and timeline.
We have conducted clinical trials for:
Our clinical trial services
We offer bespoke clinical research organisation services for trials of medicines, medical devices, food supplements, and digestive health products, adapting study design and delivery to your goals.
Medicines
& medical devices
End-to-end support for pharmaceutical and GI-related medical device studies, aligned with MHRA (Medicines and Healthcare products Regulatory Agency) and ICH-GCP (Good Clinical Practice) standards.
Food supplements
& digestive health products
Clinical studies to explore your product’s safety, tolerability, and efficacy, helping you communicate findings with scientific integrity and confidence.
Clinical trials designed for accuracy and impact
Your product deserves evidence that stands up to scrutiny. We combine expertise in gastroenterology with rigorous methodology to deliver trials that meet regulatory standards and drive commercial success.
Our proven recruitment and retention strategies ensure that we can conduct and complete your clinical trial without compromising timelines or quality.
Digestive Health Specialists
Years of experience in GI physiology and clinical research.
End-to-End CRO Support
From protocol design to final study data and reporting, we manage every detail.
Accreditation & Standards
ICH-GCP, MHRA compliance, GDPR, Cyber Essentials and accredited physiology services.
Targeted Recruitment & High Retention Rate
Access to 4,000+ verified participants and 30,000+ social media network for faster enrollment.
Regulatory Standard Deliverables
Clear, compliant documentation for regulatory submissions.
Transparent Timelines
Predictable milestones and proactive communication throughout your study.
Fast Recruitment & Value for Money
Efficient processes and flexible pricing models ensure your trial delivers maximum impact without unnecessary cost.
How our process works
Conception
We work with you to design a scientifically robust, efficiently-designed protocol concept to test your product.
Set-up
We develop and submit the clinical protocol and associated documents for regulatory and ethics approvals.
Recruitment
We utilise our innovative recruitment and retention strategies to deliver a timely trial
solution.
Analysis & write-up
We perform expert analyses and interpretation of the trial outcomes, and author regulatory-standard study reports.
Publication
We can co-author conference abstracts and publications for peer-reviewed journals.
Aftercare
We can help you share the results of your trial with consumers and healthcare practitioners to promote your product using social media and our consumer platform, TummyMOT.com
Our research capabilities
Gastrointestinal assessments
Stool microbiome assessments
Gut permeability testing
Small intestinal bacterial overgrowth tests
Intestinal transit studies
Hydrogen sulphide assessment
Intestinal methanogenic overgrowth assessment
Carbohydrate malabsorption testing
Oesophageal Manometry
24-hour reflux test
Gastric emptying test
Other
assessments
Validated clinical outcome assessments
Patient-reported outcome assessments (ePRO, eCoA)
Quality of life assessments
Safety assessments
Biochemistry and haematology
Digital biomarkers
Nutritional biomarkers
Lifestyle questionnaires
Patient satisfaction
Anthropometrics
Don’t see the capability you need?
End-to-end trial solutions
Let us handle the research journey for you.
For many companies, stepping into the world of clinical research to demonstrate the effectiveness of their product can feel overwhelming. That’s where we come in.
At the Functional Gut Clinic, we manage the entire process - from concept to completion. Our expertise in gut health and diagnostic testing means we can guide you on:
The most suitable trial design for your product
The right participants to ensure meaningful results
The most effective outcome measures to validate your claims
We collaborate with you throughout the entire research lifecycle to deliver the trial your product deserves - credible, compliant, impactful.
Trusted by leading brands
What our partners say
"Working with the Functional Gut Clinic on our clinical study was a great experience. The team is highly professional, with great attention to detail and an in-depth expertise in the area of gut health. The study was conducted in the most robust way possible, with timely sample and data analysis. The study report was thorough and was provided in a readily usable format. The team did a wonderful job of keeping us appraised of any challenges or delays to any part of the study. Overall, it was a very positive experience and one that Brightseed would be happy to repeat when another opportunity arises."
"Our collaboration with the Functional Gut Clinic has been very exciting and productive. Together, we are working to identify novel molecular biomarkers for gut health, with the shared goal of enabling earlier diagnosis and better preventive management. In our current project, we are exploring urinary microRNA as potential biomarkers for Irritable Bowel Syndrome — an area with significant unmet clinical need. With several exciting genomics-driven biomarker discovery projects already in the pipeline, I look forward to strengthening this partnership and advancing impactful research together.”* – Prof. Arijit Mukhopadhyay"
"It was a pleasure to work with the Functional Gut Clinic who conducted a pilot study of our product in participants with constipation. They provided a hassle-free experience in conducting a clinical trial, with the results written up and presented by the FGC team at a national conference."
Ready to validate your product with research-backed claims?
Speak to one of our clinical research experts today and discover how we can support your brand. From study design and participant recruitment to trial conduct and reporting, we can provide everything you need to run successful, compliant, and impactful trials.
Whether you're launching a new medicine, medical device, food supplement or digestive health product, our clinical services power your product claims with real data.
Clinical trials for medicines and medical devices
Clinical trials for food supplements and digestive health products
© Copyright The Functional Gut Group 2026