Clinical trials
Microbiota clinical trials
Below are recruiting microbiota clinical trials, each written for real people, not researchers. We’re tracking 408 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06926166Recruiting
Genes and germs in early life study
This study looks at how genes and tiny organisms in your body (microbiota) affect early childhood development. It involves storing blood and stool samples from you and your child to help researchers learn more.
GuangzhouAges Any age - NCT06929845Recruiting
Organoid models for liver cancer study
This study uses tumor samples to create lab-grown mini-livers (organoids) to better understand liver cancer. It may help researchers learn more about the disease and develop new treatments.
RomaAges 18 years+ - NCT06998823Recruiting
Probiotics during cancer therapy study
This study looks at how taking a probiotic supplement affects survival, treatment response, and gut bacteria in people undergoing cancer therapy. It may help you understand if adding probiotics can improve your treatment outcomes.
New Taipei CityAges 20 years+ - NCT07009223Recruiting
Lifestyle changes to prevent memory issues in depression
This study tests whether healthy lifestyle changes—like diet, exercise, or stress management—can help prevent memory and thinking problems in people with depression. It aims to find ways to protect your brain health as you age.
BresciaAges 50–80 - NCT07029360Recruiting
Coenzyme Q10 and Probiotics for Gum Health in Pregnancy
This trial tests whether adding coenzyme Q10 and probiotics to standard gum treatment can improve gum health and reduce inflammation in pregnant women. If you are in your second or third trimester and have gum concerns, this treatment may help both you and your baby.
Pavia, LombardyAges 18 years+ - NCT07065942Recruiting
Lactulose for gut health in diabetes with constipation
This study tests if a common stool softener called lactulose can improve gut health and metabolism in people with type 2 diabetes and long-term constipation. It aims to see if changing gut bacteria can help both digestion and blood sugar control.
BeijingAges 18–70 - NCT07066033Recruiting
Gut bacteria study for kids with eating disorders
This study looks at the gut bacteria of children and teens with eating disorders like anorexia or avoidant/restrictive food intake disorder. It aims to understand how the gut and brain are connected, which may lead to better treatments.
Madrid, MadridAges 7–18 - NCT07069140Recruiting
Lactoferrin mouthwash for gum health during pregnancy
This study tests if a daily lactoferrin mouthwash can improve gum health in pregnant women with gum disease, without needing antibiotics or other treatments. Researchers want to see if this natural protein helps keep gums healthier during the second trimester.
Pavia, LombardyAges 18–45 - NCT07076329Recruiting
Using a special diet to prevent malnutrition in older heart patients
This trial tests whether a special type of food can help prevent malnutrition in older adults with heart failure or atrial fibrillation. It looks at how the bacteria in your gut and inflammation in your body affect your brain and overall health.
FlorenceAges 70 years+ - NCT07080333Recruiting
Bladder cancer and the gut microbiome study
This study looks at the bacteria in your gut and bladder to understand how they may relate to bladder cancer. It is for men who are having their first tumor removal for suspected bladder cancer, and helps researchers learn if the microbiome plays a role.
CannesAges 18 years+ - NCT07106580RecruitingPhase 1/Phase 2
Fecal transplant capsules for clearing drug-resistant bacteria from the gut
This trial tests whether taking capsules containing processed healthy donor stool (fecal microbiota transplant) can safely remove certain drug-resistant bacteria (like CRE, ESBL-E, and VRE) from your intestines. It may be an option for people who have these bacteria in their stool but are not currently being treated with antibiotics.
RijekaAges 18 years+ - NCT07110311Recruiting
How pet cats affect nose and gut bacteria in cat allergy patients
This study looks at how living with a pet cat might affect the bacteria in your nose and gut if you have dust mite and cat allergies. It could help us understand if cats actually change your allergy symptoms or the balance of bugs in your body.
Nanjing, JiangsuAges 18–65 - NCT07129174Recruiting
Lung bacteria changes in neurosurgery ICU patients with breathing tubes
This study looks at how tiny organisms in the lungs (the lung microbiome) change in neurosurgery patients who need a breathing tube in the ICU. It aims to see if these changes affect recovery or outcomes.
Beijing, Beijing MunicipalityAges 18 years+ - NCT07153809Recruiting
Fecal transplant for severe acute pancreatitis recovery
This trial tests whether a fecal transplant (transferring healthy gut bacteria from a donor) can help people with severe acute pancreatitis. It is for adults who are about 2 weeks past the onset of the disease and have started to recover but still have fluid buildup in the pancreas.
Shanghai, Shanghai MunicipalityAges 18–70 - NCT07182500RecruitingPhase 2
Can probiotics protect your gut while traveling?
This trial tests whether taking a probiotic supplement can help keep your gut bacteria healthy during a short trip abroad. It's a good fit if you are generally healthy and planning a vacation or business trip under a week.
Huangpu, Shanghai MunicipalityAges 18–65 - NCT07199998Recruiting
How tampons and cups affect your vaginal health
This study looks at how tampons and menstrual cups affect your body's natural defenses and the healthy bacteria in your vagina. You might join if you are a healthy woman between 18 and 49 who has regular periods and uses or is willing to use these products.
Paris, Île-de-France RegionAges 18–49 - NCT07211321Recruiting
Diet, inflammation, and muscle loss in older adults
This study looks at how diet and gut health relate to muscle loss (sarcopenia) in adults 60 and older. It aims to understand links between inflammation, gut bacteria, and muscle strength so we can find better ways to prevent frailty.
Lanzhou, GansuAges 60 years+ - NCT07226674Recruiting
Study of gut health and plant nutrients for brain health
This trial tests whether a natural plant compound can help support memory and thinking in people at higher risk for Alzheimer's disease. You may qualify if you are over 50, overweight, eat a typical Western diet, and have a family history of Alzheimer's.
ColeraineAges 50 years+ - NCT07229521Recruiting
Nattokinase for heart, gut, sleep, and brain health in metabolic syndrome with sleep issues
This study tests whether a supplement called nattokinase can improve heart health, sleep, thinking, and gut bacteria in people with metabolic syndrome and mild-to-moderate sleep apnea. If you have a larger waist, blood pressure or blood sugar issues, or imbalanced cholesterol, and have been diagnosed with mild or moderate sleep apnea, you may be eligible.
TaipeiAges 18 years+ - NCT07247838Recruiting
Gut bacteria changes in first-time stroke patients
This study looks at how gut bacteria change right after a first-time ischemic stroke. It aims to understand if these changes are linked to recovery or other health factors.
Nantong, JiangsuAges 18 years+ - NCT07250100Recruiting
Study of gut bacteria in pancreatic cancer and precancer
This study looks at the bacteria living in your gut and pancreas to understand how they might affect pancreatic cancer and precancerous changes. It is for people who are already scheduled for an endoscopic procedure to look at or treat a pancreatic lesion.
Herlev, Capital RegionAges 18 years+ - NCT07252427Recruiting
Gut bacteria in IBD with or without depression
This study looks at how the bacteria in your gut (gut microbiome) may differ between people with IBD who also have depression and those who don't. It aims to help understand the link between gut health and mood.
Jinan, ShandongAges 18 years+ - NCT07253402Recruiting
Microbiota-guided radiation therapy for head and neck cancer
This trial is testing a new way to use radiation therapy for head and neck cancer by also looking at the bacteria in your mouth and gut. The goal is to see if adjusting the treatment based on your bacteria can improve outcomes and reduce side effects.
Milan, MilanAges 18 years+ - NCT07261826Recruiting
Long-term effects of fecal microbiota transplant
This study looks at how well fecal microbiota transplantation (FMT) works over time and checks its safety. If you have received at least one FMT for a qualifying condition, you may be able to participate.
Shanghai, Shanghai MunicipalityAges 3 years+
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Common questions
- Are there clinical trials for microbiota?
- Yes. Clin2 currently lists 408 recruiting microbiota 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 microbiota 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 microbiota 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.