Clinical trials
Gastrointestinal clinical trials
Below are recruiting gastrointestinal clinical trials, each written for real people, not researchers. We’re tracking 477 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07261228Recruiting
Comparing carbon footprint of diagnostic vs. therapeutic upper endoscopy
This study looks at how much carbon dioxide is released during upper endoscopy, comparing people having a diagnostic procedure for stomach discomfort versus those having treatment for a bleeding ulcer. It may help understand which type of procedure has a bigger environmental impact.
BangkokAges 20–80 - NCT05923086RecruitingPhase 2
Preventing stomach and gut problems after a specific gynecologic surgery
This Phase 2 study tests a plan to reduce stomach and bowel side effects after a gynecologic operation done with a longitudinal laparotomy (a specific type of incision). It uses a peridural catheter (a small tube for numbing medicine) to help prevent gastrointestinal disturbance after surgery.
BonnAges 18–75 - NCT05828862Recruiting
Checks blood-pressure drops during major upper stomach surgery
This trial studies what happens when blood pressure drops during planned (elective) major upper gastrointestinal surgery and looks at related blood chemistry. Your care team may collect samples during the operation to understand why this happens and how to improve outcomes.
TaipeiAges 20–80 - NCT07580118Recruiting
Postbiotic Supplement Study for Female Athletes
This study tests whether a postbiotic supplement (a type of gut health product) can reduce digestive problems that female athletes experience during exercise and their menstrual cycle. You'll take the supplement for several months while tracking your symptoms and training.
Liverpool, MerseysideAges 18 years+ - NCT07552805Recruiting
Home monitoring device after major digestive surgery
This study tests a wearable patch called Multisense that monitors your health at home after major gastrointestinal surgery. It's designed to catch problems early so you can stay safe and avoid returning to the hospital.
Nice, Alpes-MaritimesAges 18 years+ - NCT07107633RecruitingPhase 2
Imaging test for cancer spread in the abdomen
This trial tests a special imaging injection to see if it can better detect cancer that has spread to the lining of the abdomen in people with stomach or bowel cancer. If you are scheduled for surgery to remove or explore the cancer, this scan might help your doctor plan the best treatment.
ShanghaiAges 18 years+ - NCT07307495Recruiting
Pain relief after back surgery and its effect on recovery
This study tests a new painkiller, oliceridine fumarate, given through a pump after lumbar spine surgery. The goal is to see if it helps the bowels and stomach recover faster compared to standard pain relief.
Xi'an, ShaanxiAges 18–75 - NCT06359106RecruitingPhase 4
Oxygen levels and lung health in older surgical patients
This trial tests whether a lower or higher oxygen concentration during surgery can help protect lung function in older adults. It focuses on people 65 and older having laparoscopic gastrointestinal surgery.
Shenyang, LiaoningAges 65 years+ - NCT07083596Recruiting
Fermented milk drink for constipation relief in Filipino adults
This study tests if a special fermented milk drink can help relieve constipation symptoms like hard or lumpy stools. Researchers want to see if it works for adults who have constipation without a known medical cause.
Manila, ManilaAges 18–59 - NCT07521111Recruiting
Stomach Blood Flow and Feeding Tolerance in Critical Illness
This study examines whether measuring blood flow in the stomach using ultrasound can predict which hospitalized patients will struggle to tolerate tube feeding. Researchers hope this simple test might help doctors adjust feeding plans earlier and improve patient outcomes.
ShanghaiAges 18 years+ - NCT06063577Recruiting
A study to see if a special stitch can prevent hernia after belly surgery
This trial tests whether using a special type of suture (called Stratafix Symmetric) during surgery can help prevent an incisional hernia from forming after abdominal or gastrointestinal cancer surgery. If you are having certain types of major abdominal surgery, this study might be an option for you at the West Michigan Cancer Center.
Kalamazoo, MichiganAges 18 years+ - NCT06031584RecruitingPhase 1/Phase 2
Testing BL-M07D1 for HER2-positive or low solid tumors
This trial tests a new drug called BL-M07D1 for people with certain advanced solid tumors that have the HER2 protein (high or low amounts). The goal is to see if it can shrink or slow the growth of these cancers, especially in urinary and digestive system tumors.
Beijing, Beijing MunicipalityAges 18–75 - NCT07496697Recruiting
Acupuncture for healthy digestion study
This trial tests if acupuncture at two specific points can change how quickly food moves through your gut. It is for healthy people to learn more about digestion, not for treating a condition.
Ho Chi Minh City, Ho Chi MinhAges 18–30 - NCT07407777Recruiting
Can a daily drink improve your gut health and mood?
This trial tests a powder made from mushrooms and algae that you mix into a drink once a day for 30 days. Researchers want to see if it helps with minor tummy troubles and how you feel emotionally.
San Francisco, CaliforniaAges 18 years+ - NCT07425067Recruiting
Upper GI endoscopy in HIV patients
This study looks at the findings of upper endoscopy (a camera exam of the stomach and esophagus) in people living with HIV. It may help doctors understand if routine screening is helpful.
BrusselsAges 18–99 - NCT07094984Recruiting
Clearing resistant gut bacteria: three FMT methods
This trial tests three different ways to clear antibiotic-resistant bacteria from your gut using fecal microbiota transplant (FMT). It may help if you have a confirmed resistant infection and are looking for a treatment to reduce the risk of future infections.
WarsawAges 18 years+ - NCT07303738RecruitingPhase 4
Testing bile-lowering foods for kids with feeding tubes
This trial tests if certain foods can lower bile acid levels in the upper part of the stomach for children who get most nutrition through a feeding tube. It may help understand and manage reflux symptoms related to bile.
Boston, MassachusettsAges 5–21 - NCT07586111Recruiting
Plant Foods for Better Gut and Heart Health
This study tests whether eating more plant-based foods improves your gut bacteria, digestion, and heart health markers. You'll follow a structured diet plan for several weeks while providing blood, stool, and urine samples to measure changes.
LondonAges 30–70 - NCT06802276Recruiting
Smart underwear measures gas from diet
This study tests special underwear that can measure gas produced by digestion after eating different foods. Researchers want to see if the underwear can track how diet affects gas production.
Aurora, ColoradoAges 18 years+ - NCT07293624Enrolling by invitation
Diet and inflammation after weight-loss surgery
This study looks at how your diet affects inflammation and stomach symptoms after weight-loss surgery. You'll fill out food records and have blood tests to see how your eating habits relate to your health.
Istanbul, UskudarAges 18–65 - NCT06505395RecruitingPhase 2
Octreotide injection for advanced neuroendocrine tumors
This trial is testing an injectable medicine called octreotide for people with advanced neuroendocrine tumors of the digestive system or pancreas. It aims to see if the medicine can help control the tumor.
Beijing, Beijing MunicipalityAges 18 years+ - NCT07381816Enrolling by invitation
Study of gut blood flow in people with post-meal low blood pressure
This study uses MRI to measure blood flow in the gut when you eat, to understand why some people get dizzy or lightheaded after meals. It compares people with postprandial hypotension to healthy volunteers.
Glostrup MunicipalityAges 18–90 - NCT06846359Recruiting
Hypnotherapy for Upper Gut Symptoms
This study tests whether hypnotherapy sessions, delivered through a smartphone app, can help relieve upper digestive symptoms like nausea, bloating, and indigestion. It's for people whose symptoms are not caused by a known disease and who have already had normal stomach-emptying tests.
Rochester, MinnesotaAges 18 years+ - NCT07105865Recruiting
Nickel and LTPs in stomach and bowel issues
This study looks at whether being sensitive to nickel or certain proteins called LTPs is linked to ongoing stomach and bowel problems. It aims to find better ways to diagnose and help people with functional dyspepsia or irritable bowel syndrome.
NaplesAges 4–65
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Common questions
- Are there clinical trials for gastrointestinal?
- Yes. Clin2 currently lists 477 recruiting gastrointestinal studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a gastrointestinal trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a gastrointestinal trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.