Clinical trials
Small Intestinal Bacterial Overgrowth clinical trials
Below are recruiting small intestinal bacterial overgrowth clinical trials, each written for real people, not researchers. We’re tracking 14 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07451171RecruitingPhase 2
Comparing antibiotics for gut bacteria in children
This study compares three different antibiotics to treat small intestine bacterial overgrowth (an overgrowth of bacteria in the gut) in children in Bangladesh. It aims to find which antibiotic works best.
DhakaAges 1–2 - NCT05967871RecruitingPhase 1
Testing poop-based therapy for kids with SIBO
This early study tests whether fecal microbiota transplant (a stool donation placed into the gut) is safe and practical for children with small intestinal bacterial overgrowth (SIBO). It may help reduce SIBO symptoms, but the main goal is to see if the treatment and study steps work well.
Hamilton, OntarioAges 3–18 - NCT06772064Recruiting
Rifaximin for bloating caused by SIBO
This study tests whether the antibiotic rifaximin can relieve bloating in people with small intestinal bacterial overgrowth (SIBO). If you have chronic bloating and a positive SIBO breath test, this trial may be a good fit.
Jinan, ShandongAges 18–70 - NCT06721884RecruitingPhase 1/Phase 2
Artemisia annua for small intestinal bacterial overgrowth (SIBO)
This trial tests whether a supplement made from Artemisia annua (sweet wormwood) can help people with SIBO, a gut condition. You will take the supplement or a placebo for 5 weeks and have breath tests and blood draws to see how it affects your symptoms.
Portland, OregonAges 18 years+ - NCT06298409RecruitingPhase 1
Rifaximin for SIBO: Gut Bacteria Study
This study tests how Rifaximin (a medicine for SIBO) affects the bacteria and other substances in your gut. You'll swallow a small capsule that collects samples as it travels through your digestive system, so researchers can see how your gut changes during treatment.
Mountain View, CaliforniaAges 18–80 - NCT06285734Recruiting
Trial on small intestinal bacterial overgrowth in people with abdominal bloating
This study looks at whether certain bacteria in the small intestine cause abdominal bloating and distension. It aims to help understand this common problem and find better ways to treat it.
Jinan, ShandongAges 18–60 - NCT01822470Enrolling by invitation
Registry studying bacteria patterns in suspected small bowel overgrowth
This is a research registry that collects small-bowel fluid samples from people being tested for “SIBO” (an overgrowth of bacteria in the small intestine). It aims to describe what bacteria are present and how results differ between people with suspected SIBO and others having similar tests for other reasons.
Indianapolis, IndianaAges 18–90 - NCT06946706Recruiting
Bacteria overgrowth in stomach condition study
This study looks at whether people with autoimmune gastritis (a stomach condition) are more likely to have small intestinal bacterial overgrowth (SIBO), which can cause bloating and other symptoms. It uses a simple breath test and questionnaires.
Shanghai, Shanghai MunicipalityAges 18–65 - NCT06988150Recruiting
SIBO and weight loss in pancreatic cancer
This study looks at whether a condition called SIBO (too many bacteria in the small intestine) is linked to weight loss in people with pancreatic cancer. You might join if you have pancreatic cancer and have lost weight recently.
Los Angeles, CaliforniaAges 18 years+ - NCT06927011Recruiting
Loose stools after colon cancer surgery: a study
This study looks at why some people have chronic loose stools after right-sided colon cancer surgery, possibly due to bile acid problems or bacterial overgrowth. It uses a new device to sample the small intestine.
Houston, TexasAges 20–85 - NCT04506593Recruiting
GI Motility diagnosis registry for people with digestion movement problems
This trial is a registry, meaning it collects information about people being evaluated for problems with how the gut moves. It may help doctors better diagnose gastrointestinal motility disorders in the future.
Indianapolis, IndianaAges Any age - NCT05976165Recruiting
Breath testing study for small bowel bacterial overgrowth
This study checks whether breath tests can help identify small intestinal bacterial overgrowth in people with reflux-like symptoms (heartburn or regurgitation). If you qualify, you may be asked to avoid certain medicines and treatments for a short time so the test results are accurate.
Jacksonville, FloridaAges 18 years+ - NCT06317441Recruiting
Probiotic for bloating and high hydrogen breath test
This study tests a probiotic pill for people with bothersome bloating and an abnormal hydrogen breath test. It aims to see if the probiotic helps improve gut symptoms.
Calgary, AlbertaAges 18–65 - NCT06710067Recruiting
Urine chemicals for diagnosing disease
This study looks at chemicals in urine to help find new ways to diagnose diseases. You give one urine sample and answer a few questions—no treatment or long-term follow-up needed.
Encinitas, CaliforniaAges 18 years+
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Common questions
- Are there clinical trials for small intestinal bacterial overgrowth?
- Yes. Clin2 currently lists 14 recruiting small intestinal bacterial overgrowth 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 small intestinal bacterial overgrowth 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 small intestinal bacterial overgrowth 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.