| Not Yet Recruiting | Undiluted and Diluted Nutrition NCT07352150 | John Paul II Catholic University of Lublin | N/A |
| Recruiting | Endoscopic Retrograde Cholangiopancreatography NCT07490132 | Methodist Health System | — |
| Recruiting | Feasibility, Safety, and Potential Efficacy of Fecal Microbiota Transplantation (FMT) for Gastrointestinal Dys NCT05664113 | St. Jude Children's Research Hospital | Phase 1 |
| Recruiting | Video Tutorial and Oral Explanation Vs Oral Explanation Alone in Colonoscopy Preparation NCT07355777 | Centre Hospitalier Saint Joseph Saint Luc de Lyon | N/A |
| Not Yet Recruiting | Diluted and Undiluted Enteral Nutrition NCT06516835 | Medical University of Lublin | N/A |
| Recruiting | Gastroparesis Registry 4 NCT05846802 | Johns Hopkins Bloomberg School of Public Health | — |
| Active Not Recruiting | Microbiota Transplant Therapy for Children With Both Autism Spectrum Disorder and Gastrointestinal Disorders NCT06503978 | Gut-Brain-Axis Therapeutics Inc. | Phase 2 |
| Completed | The Effect of Virtual Reality Glasses During Endoscopy NCT06718504 | Saglik Bilimleri Universitesi | N/A |
| Recruiting | Healthy Stool Volunteer Donors for Fecal Microbiota Transplantation Trials NCT06478823 | Assistance Publique - Hôpitaux de Paris | N/A |
| Not Yet Recruiting | A Study to Compare and Evaluate the Safety, Pharmacokinetics and Pharmacodynamics of UI059 and UIC202201 NCT06393881 | Korea United Pharm. Inc. | Phase 1 |
| Completed | A Pharmacokinetic Comparison of Three Butyrate Products NCT06700785 | The Center for Applied Health Sciences, LLC | N/A |
| Recruiting | The Gut-Lung Axis and Respiratory Illness in Children NCT06271213 | NHS Greater Glasgow and Clyde | — |
| Unknown | Digital Versus Telephone Symptom Assessment and Triage in Primary Care NCT06092866 | Region Skane | N/A |
| Active Not Recruiting | Biological Sample Repository for Gastrointestinal Disorders NCT05874726 | Pichamol Jirapinyo, MD, MPH | — |
| Enrolling By Invitation | AUD Biomarkers Study (Proteomic and Genomic Analysis of Biospecimens) NCT05889806 | Audubon Bioscience | — |
| Completed | Clostridium Butyricum CBM588® vs. Rifaximin for Symptomatic Uncomplicated Diverticular Disease (SUDD): A Real- NCT06852274 | Dr. Amjad Khan | N/A |
| Recruiting | NAZA - Nottingham/Astra ZenecA Prospective IBD Cohort Study NCT06956703 | University of Nottingham | — |
| Terminated | Probiotics Supplementation and Intestinal Microbiome in Neonates With Gastrointestinal Surgery NCT03266315 | University of Calgary | N/A |
| Completed | Evaluation of the Impact of a Forward Viewing Scope at Time of ERCP NCT05627882 | Brigham and Women's Hospital | — |
| Unknown | Clinical Study Evaluating the Gastroprotective Effect of Carvedilol in Patients With Ischemic Heart Disease on NCT05553717 | Tanta University | N/A |
| Terminated | A Study to Evaluate LB1148 for Return of Bowel Function in Subjects Undergoing Bowel Resection NCT05470387 | Palisade Bio | Phase 3 |
| Unknown | Can the SurgInfoBot Improve the Consent Process for Endoscopy? A Randomised Controlled Trial NCT05159921 | Tallaght University Hospital | N/A |
| Completed | Aerosolization During Upper Endoscopy NCT06006078 | Anthony Lembo | N/A |
| Completed | Prokinetic Effect of Selected Nutraceuticals NCT06157034 | Allama Iqbal Open University Islamabad | N/A |
| Completed | Fructose Effect on Neuroinflammation and Feelings NCT05371067 | University Hospital, Rouen | N/A |
| Completed | Clinical Utility Evidence for TissueCypher® NCT05200325 | Qure Healthcare, LLC | N/A |
| Completed | ABVN Phase 2-Studying the Effect of Stimulation on the Auricular Branch of the Vagal Nerve -B NCT06827548 | Indiana University | N/A |
| Unknown | Therapeutic Endoscopic Ultrasound for Gastrointestinal Disorders: A Multicenter Registry Study NCT05051358 | Advanced Endoscopy Research, Robert Wood Johnson Medical School Rutgers University | — |
| Completed | The Effect of Reiki on Anxiety, Stress, and Comfort NCT04843384 | Mardin Artuklu University | N/A |
| Withdrawn | Distribution of Biospecimens From Biorepositories/Biobanks for Research Use NCT03884400 | iSpecimen Inc | — |
| Unknown | Optimising the Care and Treatment Pathways for Older Patients Facing Major Gastrointestinal Surgery. NCT04545125 | Sheffield Teaching Hospitals NHS Foundation Trust | — |
| Terminated | Online Parent-Report Evaluation of the Effects of Processed Music NCT05249270 | Indiana University | — |
| Completed | Protocol for Patients Above 75 Years Undergoing Emergency Laparotomy NCT04293653 | Haukeland University Hospital | N/A |
| Active Not Recruiting | ctDNA-guided Surveillance for Stage III CRC, a Randomized Intervention Trial NCT04084249 | Claus Lindbjerg Andersen | N/A |
| Completed | Effect of Palatable Lidocaine Gel on Gag Reflex for Patients Undergoing Upper Gastrointestinal Endoscopy NCT04213833 | Zagazig University | N/A |
| Active Not Recruiting | MTT for Children With ASD Who Have Gastrointestinal Disorders NCT04182633 | Arizona State University | Phase 2 |
| Active Not Recruiting | The Gut-Brain Study NCT03426826 | Children's Hospital Los Angeles | Phase 1 |
| Unknown | Image-Enhanced Endoscopy in the Gastrointestinal Tract NCT04085211 | King's College Hospital NHS Trust | — |
| Completed | Protein and Exercise-Induced Gastrointestinal Symptoms NCT05855174 | Mount Royal University | N/A |
| Recruiting | Advanced GastroInstestinal(GI) Surgery Training in Residency and Fellowship. NCT07494318 | Methodist Health System | — |
| Completed | Ionizing Radiation During Endoscopic Procedures (ENDORAY Study) NCT07009587 | GCS Ramsay Santé pour l'Enseignement et la Recherche | — |
| Completed | Evaluating Innovations in Transition From Pediatric to Adult Care - The Transition Navigator Trial NCT03342495 | University of Calgary | N/A |
| Completed | Parkinson's Disease and Digestive Health NCT04032262 | Augusta University | N/A |
| Completed | Minimal Risk Registry of Endoscopic Image and Pathology Correlation for Fujiflim NCT03440047 | Mayo Clinic | N/A |
| Completed | Efficacy of a Craniosacral Therapy Protocol in the Treatment of Infant Colic NCT03675763 | Universidad Católica San Antonio de Murcia | N/A |