Clinical trials
Probiotic Intervention clinical trials
Below are recruiting probiotic intervention clinical trials, each written for real people, not researchers. We’re tracking 30 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06989177Recruiting
Can a probiotic help with body weight?
This trial tests whether taking a probiotic (a good bacteria supplement) can help with body weight. It is for healthy adults, and also for overweight or obese people who have certain weight-related health issues.
Hangzhou, ZhejiangAges 20–50 - NCT06717659Recruiting
Probiotics for lung rehab in COPD patients
This trial tests if adding probiotics (healthy bacteria you take as a supplement) to your regular lung rehab program helps people with COPD breathe better and feel stronger.
New Taipei CityAges 18 years+ - NCT07275866Recruiting
Probiotic study for people with constipation
This study tests whether a multi-strain probiotic can help relieve constipation. You would stop other constipation treatments and track your symptoms with a daily diary.
LondonAges 18–70 - NCT07512557Recruiting
Probiotic Safety and Effectiveness Study for Women
This research tests a new probiotic supplement to see if it's safe, easy to take, and works well. You'll take the probiotic for several weeks and answer questions about how you feel and any side effects.
Ottawa, OntarioAges 18–40 - NCT07047339RecruitingPhase 2/Phase 3
Probiotic 6600 for colitis patients
This trial tests whether adding Probiotic 6600 to your usual treatment can help manage colitis, including ulcerative colitis or Crohn's disease. It aims to see if the probiotic improves symptoms and is safe to use.
ShanghaiAges 18–75 - NCT06030362Recruiting
Probiotic study for weight and gut health in adults
This study tests whether taking a probiotic supplement can help with weight management and gut health in adults with overweight or obesity. You may be able to join if you are between 18 and 50, have a BMI of 25 to 40, and are generally healthy.
Los Angeles, CaliforniaAges 18–50 - NCT07497932Recruiting
Nutritional effects in heart surgery
This trial looks at whether adding a probiotic supplement before cardiovascular surgery can improve recovery. It studies the link between nutrition, gut health, and surgical outcomes.
New Taipei CityAges 50–80 - NCT07645157RecruitingPhase 2
Sertraline and Probiotics for Teen Depression
This study tests whether combining an antidepressant medication (sertraline) with special bacteria supplements (probiotics) can help treat depression in teenagers ages 12–18. Researchers believe the probiotics may help the medication work better by improving gut health.
Chongqing, YuzhongAges 12–18 - NCT07163819RecruitingPhase 2
Probiotics for digestive health during short trips abroad
This study tests whether taking a probiotic can help prevent or reduce digestive issues when traveling abroad for less than a week. It aims to see if probiotics support overall health during short overseas trips.
Haidian, Beijing MunicipalityAges 18–65 - NCT07213323Recruiting
Probiotics for Digestion During Weight-Loss Treatment
This study tests whether taking a probiotic (a type of 'good' bacteria) can improve digestion and gut health in people who are starting a GLP-1 RA medicine for weight loss. You would take the probiotic daily and answer questions about your digestive symptoms.
Pierre-BéniteAges 18–75 - 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 - NCT07341087Recruiting
Probiotic drink study for skin inflammation in menopause
This study tests whether a daily probiotic drink can improve inflammatory skin conditions like rosacea, acne, or eczema in women aged 40 to 60. You will take the drink for 8 weeks and provide blood, skin, stool samples, and a photo of your face.
London, LondonAges 40–60 - NCT06817031Enrolling by invitationPhase 2
Probiotics for gut health in pregnancy – Bangladesh study
This study tests whether a daily probiotic capsule during pregnancy can improve the health of a mother's gut, especially if she is exposed to unclean water or poor sanitation. Pregnant women early in their second trimester who live in the Matlab area of Bangladesh may join.
ChāndpurAges 18 years+ - NCT07134790RecruitingPhase 2
Probiotics to improve gut health during pregnancy
This trial tests whether taking probiotics during pregnancy can improve gut health in mothers living in areas where gut infections are common. It is for women who are in their first or early second trimester and who have certain bacteria in their stool.
Bobo-DioulassoAges 18 years+ - NCT07415707Recruiting
Reducing alcohol and taking probiotics for brain health in older adults
This study tests whether cutting back on alcohol and taking probiotics can improve memory and thinking in older adults who are heavy drinkers. If you are interested in drinking less, you may be able to join.
Miami, FloridaAges 65–84 - NCT07207434RecruitingPhase 2
Probiotic supplement for pregnant women to improve gut health
This trial tests whether taking a probiotic during pregnancy can improve gut health in women living in areas where gut infections are common. It may help reduce harmful bacteria and related health problems for both you and your baby.
Matiari, SindhAges 18–49 - NCT07144826RecruitingEarly Phase 1
Probiotic for Gut and Vaginal Health in Ovarian Cancer Chemotherapy
This trial tests whether taking a probiotic supplement can help balance the bacteria in your gut and vagina while you undergo chemotherapy for advanced ovarian cancer. It aims to see if this could improve your treatment experience or outcomes.
Columbus, OhioAges 18 years+ - NCT07369830Recruiting
Probiotics for bowel function after rectal cancer surgery
This trial tests whether taking a probiotic supplement (Clostridium butyricum) can improve gut health and bowel function after surgery for very low rectal cancer. It may help patients who have a temporary ileostomy and are planning to have it reversed within 6 months.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT07407894Recruiting
Probiotic study for healthy aging in midlife adults
This trial tests a probiotic supplement called iVS-1 to see if it can slow biological aging in healthy adults aged 40-75. Researchers want to learn if this probiotic may help support health as you age.
New Port Richey, FloridaAges 40–75 - NCT07539805RecruitingPhase 2
Sertraline Plus Probiotic for Teen Depression
This study tests whether combining sertraline (an antidepressant) with a specific probiotic called Lactobacillus crispatus can safely and effectively treat depression in teenagers. The probiotic may help by improving gut health, which researchers believe could support mental health.
Longgang, Chongqing MunicipalityAges 12–18 - NCT06722443Enrolling by invitation
Probiotics and Prebiotics for Obesity
This trial tests whether adding probiotics and prebiotics to your diet can help with obesity and related health problems like prediabetes, diabetes, high cholesterol, or high blood pressure.
Granada, SpainAges 18–75 - NCT07114133Enrolling by invitation
Environmental probiotics for cat hair allergies
This study tests whether a special probiotic spray, used in your home, can reduce allergy symptoms in people who are allergic to cats. If you have cat allergies with nasal symptoms and live in a stable home, you may be able to join.
Hangzhou, ZhejiangAges 18–70 - NCT06802042Recruiting
Probiotic for constipation in pregnancy
This trial tests if a probiotic called Lactobacillus can help relieve constipation in pregnant women and improve gut health. It compares the probiotic to a placebo to see if it is safe and effective.
Beijing, Beijing MunicipalityAges 18–40 - NCT07624409Enrolling by invitationEarly Phase 1
Occupational health study for high-altitude workers
This study examines how working at high altitudes (where there is less oxygen in the air) affects employees at an astronomical observatory in Chile. Researchers want to understand health impacts and develop better support for people working in these extreme conditions.
San Pedro de Atacama, AntofagastaAges 20–50
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Common questions
- Are there clinical trials for probiotic intervention?
- Yes. Clin2 currently lists 30 recruiting probiotic intervention 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 probiotic intervention 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 probiotic intervention 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.