Clinical trials
Dysbiosis clinical trials
Below are recruiting dysbiosis clinical trials, each written for real people, not researchers. We’re tracking 45 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07189390RecruitingPhase 2
Probiotic study for infants who had antibiotics at birth
This study tests whether giving a probiotic (a 'good' bacteria) to babies who received antibiotics shortly after birth can help their developing gut and immune system. Participants will receive a daily probiotic or placebo for about 6 weeks, and their health will be monitored.
Adelaide, South AustraliaAges Up to 4 weeks - NCT07148583Recruiting
BioAmicus Complete for tummy troubles in babies
This study tests if a probiotic supplement called BioAmicus Complete can help babies with common digestive issues like colic, reflux, constipation, or loose stools. It might be a good option if your baby has these symptoms and you haven't used other probiotics or antibiotics recently.
Haiphong, Hai PhongAges birth–2 years - 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+ - NCT07093463Recruiting
Colon-delivered Vitamin B2 for Gut Health
This trial tests whether a special form of vitamin B2 (riboflavin) delivered to the colon can improve gut health in people with mild to moderate bowel complaints. The study compares the effects of this supplement to a standard diet add-on (inulin) and looks at changes in gut bacteria and symptoms.
Berlin, State of BerlinAges 50–70 - NCT06863194RecruitingPhase 1/Phase 2
Probiotics and kidney disease progression trial
This trial tests whether taking a probiotic supplement can slow down the decline of kidney function in people with moderate chronic kidney disease (CKD stages 3 and 4). If you have stable kidney disease and are not already taking probiotics, joining this study could help researchers find a new way to protect your kidneys.
Al Mansurah, DakahliyaAges 18 years+ - NCT07050485Enrolling by invitation
Postbiotic gummies after GI cancer surgery
This trial tests if taking postbiotic gummies (a type of supplement that helps good gut bacteria) can help your gut recover faster after surgery for stomach, colon, or other gastrointestinal cancers. It is for people having scheduled, minimally invasive (laparoscopic) surgery to remove their cancer.
Tampa, FloridaAges 18 years+ - NCT06916936Recruiting
Peanut butter study for gut health in kids
This study tests if eating peanut butter every day for a few weeks can improve how your body digests food and stays healthy. It's for kids in elementary or middle school who don't have nut allergies or certain stomach problems.
Tallahassee, FloridaAges 6–13 - NCT06825819Recruiting
Dysbiosis and long COVID study
This study looks at gut bacteria changes in people with and without long COVID symptoms after a confirmed COVID infection. It may help find why some people have long-term health problems.
Chicago, IllinoisAges 18–80 - NCT06825117Enrolling by invitation
Probiotics after kidney transplant
This trial tests whether taking a probiotic supplement helps people recovering from a kidney transplant. If you are between 18 and 75 years old and had a smooth recovery in the first month after surgery, you may be able to join.
UdineAges 18–75 - NCT06820450Recruiting
Hormones and chemicals in endometriosis
This study looks at how hormones and chemicals in the environment may affect endometriosis and vaginal health. Researchers will compare women with newly diagnosed deep endometriosis to women without the condition to find possible links.
NantesAges 18–45 - NCT06636669Enrolling by invitationPhase 4
Probiotics to prevent repeat joint infection after replacement surgery
This trial tests whether taking probiotics can help prevent another infection in people who have had a hip or knee replacement that became infected. If you are scheduled for revision surgery due to an infection, this study may be a good fit.
Boston, MassachusettsAges 18–90 - NCT06588218Recruiting
Watermelon for gut and heart health in young adults
This study is testing whether eating watermelon every day for 4 weeks can improve gut health and heart health in young adults. If you are overweight and between 18 and 30, you may be able to join.
Tallahassee, FloridaAges 18–30 - NCT06544954Recruiting
Grape study for heart and gut health in overweight women
This study tests whether eating California grapes can improve gut health and heart health in overweight or obese women who have been through menopause and may have type 2 diabetes or metabolic syndrome. You would need to eat grapes daily and provide blood and stool samples.
Davis, CaliforniaAges 45–70 - NCT06451588RecruitingPhase 2
Fecal transplant for inflammatory back pain
This study tests whether a fecal microbiota transplant (a procedure that transfers healthy bacteria into your gut) can reduce inflammation and improve symptoms in people with inflammatory back pain (axial spondyloarthritis). It may help if your current treatments are not working well enough.
TromsøAges 18–65 - NCT06098404Recruiting
Cancer-related thinking and memory changes linked to gut health
This study looks at how gut bacteria might be connected to memory or thinking problems in people with cancer. If you join, you will answer surveys and provide stool samples to help researchers understand this link.
Galveston, TexasAges 18 years+ - NCT06043154Recruiting
Study on gut bacteria and anorexia nervosa during refeeding
This study looks at how gut bacteria change in women with anorexia nervosa during refeeding. It aims to find new insights that could improve treatment.
NantesAges 15 years+ - NCT05966649Recruiting
Synbiotics for preventing preterm birth in higher-risk pregnancies
This trial tests whether taking synbiotics (a mix of “good” probiotics and “food” for them) can help lower the chance of going into labor too early. It’s for pregnant people with certain risk factors for preterm birth, and it compares outcomes while you follow the study plan.
Edegem, AntwerpenAges 18 years+ - NCT05632497Recruiting
Testing gut microbiome changes in adults with anorexia
This study looks at how changing the gut bacteria (microbiome) may affect people hospitalized for anorexia nervosa. You may be eligible if you’re an adult with a very low BMI and meet the study’s timing and health requirements.
VillejuifAges 18 years+ - NCT05517928Recruiting
Probiotic trial to help gut changes caused by acid-reducing pills
This study tests whether a probiotic called Lactobacillus rhamnosus GG can improve gut bacteria changes caused by proton pump inhibitors (acid-reducing medicines). It mainly involves people who are otherwise healthy and do not currently have ongoing stomach or gut symptoms.
Scottsdale, ArizonaAges 18 years+ - NCT05288790RecruitingPhase 2
Study how gut chemicals and alcohol affect heart risk in HIV
This Phase 2 study looks at how “microbiome metabolites” (chemicals from gut bacteria) and alcohol may affect heart and blood vessel risk in people living with HIV. If you qualify, you may be asked to follow a study plan to see how these factors change health markers related to cardiovascular disease.
Nashville, TennesseeAges 18–89 - NCT04527055Enrolling by invitationPhase 4
Bismuth treatment for H. pylori: 10 or 14 days
This trial compares two common stomach medicine plans that use bismuth for 10 days versus 14 days to clear an H. pylori infection. It may help you find a shorter or more effective treatment schedule if you have H. pylori confirmed by an endoscopy.
TainanAges 18–100
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Common questions
- Are there clinical trials for dysbiosis?
- Yes. Clin2 currently lists 45 recruiting dysbiosis 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 dysbiosis 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 dysbiosis 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.