Clinical trials
Dysbiosis clinical trials
Below are recruiting dysbiosis clinical trials, each written for real people, not researchers. We’re tracking 42 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06668012Recruiting
Vaginal health study for premenopausal women
This study looks at changes in vaginal bacteria in women before menopause. It aims to understand why some women have higher vaginal pH and how it relates to symptoms.
BarcelonaAges 18–45 - NCT07212361Recruiting
Restoring infant gut bacteria with mother's microbes
This study tests whether giving healthy newborns a special mix of their own mother's friendly bacteria can help build a healthy gut. It is for mothers who had a healthy pregnancy, plan to breastfeed, and live near Helsinki.
HelsinkiAges Up to 50 years - NCT05192499Recruiting
Study gut-and-lung bacteria in very young children with asthma
This study looks at whether differences in the body’s bacteria (in the gut and/or airways) can help predict which toddlers with asthma may develop a more severe form. It may help doctors identify children at higher risk earlier so they can be monitored more closely.
Brest, FinistèreAges 1–3 - NCT06005298Recruiting
Testing SBIRT to help with PrEP and alcohol use
This study looks at whether talking about alcohol use can help people stick with their PrEP routine. It tests a simple program called SBIRT (Screening, Brief Intervention, and Referral to Treatment) to support your health and HIV prevention.
Louisville, KentuckyAges 18–85 - NCT07191171Recruiting
Gut bacteria drugs and immunotherapy in lung cancer
This study looks at whether certain drugs (like antibiotics or other gut-bacteria-affecting medications) influence how well immunotherapy works for advanced non-small cell lung cancer. It may help find ways to improve treatment outcomes.
StrasbourgAges 18 years+ - NCT07209007Recruiting
Skin and gut bacteria in healed burn wounds
This study looks at how burns change the bacteria on your skin and in your gut. It may help doctors understand healing better.
SeoulAges 19–65 - NCT07429227Recruiting
Gut health and heart disease: a probiotic study
This trial tests whether natural extracts and probiotics can improve gut health in people who have had a recent heart attack (Acute Coronary Syndrome). It uses special exams to measure changes in gut bacteria.
Peschiera del Garda, VeronaAges 30–70 - 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 - 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 - 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 - NCT07648446Recruiting
Learning About Pulses and Gut Health in Children
This study teaches children ages 6–13 about pulses (beans, lentils, chickpeas) and how they affect gut health. Researchers want to understand whether eating pulses helps children's digestive systems work better.
Tallahassee, FloridaAges 6–13 - 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 - 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 - NCT07703371Recruiting
Kodo millet porridge and its effect on gut health and metabolic syndrome
This study tests whether eating Kodo millet porridge every day for 12 weeks can improve gut health and reduce risk factors for metabolic syndrome (like being overweight). If you are between 20 and 60 years old, are overweight or obese, and are willing to eat the porridge daily without changing your diet or exercise, you may be able to join.
Mysore, KarnatakaAges 20–60 - NCT04853212Recruiting
Study gut microbiome differences in people with spondyloarthritis
This study looks at whether changes in the gut bacteria (called microbiome dysbiosis) are linked to spondyloarthritis. It compares people with the condition to people without it who are already planning a digestive scope for another reason.
Boulogne-BillancourtAges 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 - 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+ - 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+ - NCT05633706Recruiting
Testing a capsule to study gut bacteria in the small intestine
This study tests the SIMBA capsule to learn how gut bacteria (dysbiosis) relate to digestive conditions. It may help researchers better understand these conditions and how the capsule can be used safely.
Calgary, AlbertaAges 18–80 - NCT05813184Recruiting
Prenatal antibiotics and breast milk effects on newborn immunity
This study looks at how taking antibiotics during late pregnancy affects a baby’s early immune protection, with breastfeeding as an important factor. You may be able to join if you plan to breastfeed and either received antibiotics for at least 7 days after 32 weeks or did not receive such antibiotics during pregnancy.
MilanAges 18–40 - NCT05824819Recruiting
Study gut and pelvic microbiome in endometriosis surgery
This study looks at differences in the body’s microbes in people with endometriosis (and sometimes infertility) who are having key procedures through a laparoscopy (a small-camera surgery). It may help doctors better understand what’s going on and improve future treatment choices.
KrakowAges 18–45 - 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+ - 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+ - 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+
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Dysbiosis trials by state
Studies with a site anywhere in these states.
Common questions
- Are there clinical trials for dysbiosis?
- Yes. Clin2 currently lists 42 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.