Clinical trials
Probiotic clinical trials
Below are recruiting probiotic clinical trials, each written for real people, not researchers. We’re tracking 214 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07083596Recruiting
Fermented milk drink for constipation relief in Filipino adults
This study tests if a special fermented milk drink can help relieve constipation symptoms like hard or lumpy stools. Researchers want to see if it works for adults who have constipation without a known medical cause.
Manila, ManilaAges 18–59 - NCT06959043Recruiting
Diet and exercise for type 2 diabetes
This study tests if a plant-based diet and exercise program can improve blood sugar control in people with type 2 diabetes. Participants will live in a hospital for 4 weeks to follow the program closely.
São Paulo, São PauloAges 45–70 - NCT06636240Recruiting
Mulberry for eczema in children
This study tests whether mulberry extract could help improve eczema symptoms in children. It is a small, early trial to see if this natural prebiotic is safe and helpful.
New Taipei City, TaiwanAges 6–17 - NCT06725888Recruiting
Vagitab-T for bacterial vaginosis
This study tests a medical device called Vagitab-T as an extra treatment for women with bacterial vaginosis who are already taking the antibiotic metronidazole. It may help prevent the infection from coming back.
Timișoara, Timiș CountyAges 18–65 - NCT07044310RecruitingPhase 2
Probiotics for preventing bone loss during breast cancer hormone therapy
This trial tests if a probiotic supplement can help prevent bone loss in women with HR-positive breast cancer who are starting an aromatase inhibitor. You would take the probiotic daily and provide blood and stool samples to see how it affects your bone health.
Jacksonville, FloridaAges 18 years+ - NCT03773003Recruiting
Study of fatigue caused by cancer or chronic fatigue
This study looks at why fatigue happens in people with cancer and, in some cases, in people with chronic fatigue conditions. It may help researchers better understand the causes of fatigue so future treatments can be improved.
Homburg, SaarlandAges 18–80 - NCT06981663Recruiting
Fibers and probiotics for uric acid levels
This study looks at how certain fibers and probiotics might affect uric acid levels in your body. You'll provide a stool sample, and it will be tested in a lab to see if these ingredients can help lower uric acid.
ÖrebroAges 18–80 - NCT06158152Recruiting
AM3 supplement for metabolic syndrome pilot study
This study tests an oral supplement called AM3 in people with metabolic syndrome. It looks at whether the supplement can help improve sugar and fat levels in the blood.
MadridAges 18–75 - NCT06898788RecruitingEarly Phase 1
Probiotics for depression in teens and young adults
This study tests whether a probiotic supplement can help improve depression in young people who are already taking an SSRI antidepressant. If you join, you will take a probiotic or placebo for several weeks and have your mood and brain activity checked.
San Francisco, CaliforniaAges 15–24 - 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 - 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+ - NCT06786052RecruitingPhase 2
Study on after-meal energy in adults 50–70
This trial studies how a probiotic supplement affects energy use after meals in adults aged 50–70 who are overweight. You'll take either the probiotic or a placebo for several weeks.
Pierre-Bénite, Auvergne-Rhône-AlpesAges 50–70 - NCT06755307Recruiting
Probiotic cream for diaper rash in babies
This study tests whether a probiotic (beneficial bacteria) cream can help heal diaper rash in babies. It's for otherwise healthy infants under 2 who have diaper dermatitis.
MariborAges 1 month–2 years - NCT06446869Recruiting
Probiotic for menopause symptoms
This study tests whether a probiotic supplement can help reduce hot flashes and other menopause symptoms. It is for women who are in early menopause and have frequent hot flashes.
Glasgow, GlasgowAges 42–60 - NCT06410443Recruiting
Steroid treatment for radiation-induced bowel injury
This trial tests if local steroids can help heal bowel damage caused by radiation therapy for cancer. It may reduce pain, bleeding, and urgency, and improve quality of life.
Shenyang, LiaoningAges 18 years+ - NCT06347770RecruitingPhase 1
Oral Gan Shuangbi for recovery after C-section
This trial tests an oral herbal medicine (Gan Shuangbi) to see if it helps your intestines work normally again after a C-section. It may speed up recovery after delivery.
Guangzhou, GuangdongAges 18–45 - NCT05178069RecruitingPhase 2
Probiotic supplement study for alcohol use disorder and liver injury
This Phase 2 trial studies whether a probiotic (LGG) can improve health in people with alcohol use disorder and alcohol-related liver injury. It’s not an alcohol treatment study, so participants are mainly joining to see how the supplement affects the body and liver-related outcomes.
Louisville, KentuckyAges 21–65 - NCT06055894Recruiting
Plant-based diet and supplements for smoldering myeloma or MGUS
This study tests whether a plant-based diet and certain supplements can help people with smoldering multiple myeloma (SMM) or monoclonal gammopathy of undetermined significance (MGUS). Participants will learn to cook plant-based recipes and track their meals using a phone app.
Basking Ridge, New JerseyAges 18 years+ - NCT05427695RecruitingPhase 2
Probiotic rinse to treat chronic sinus inflammation
This Phase 2 study tests whether washing your sinuses with a probiotic solution can improve chronic sinusitis symptoms and inflammation. It’s for adults with chronic sinus symptoms that have flared, especially if you’ve had sinus surgery in the past.
Chicago, IllinoisAges 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 - NCT04871412RecruitingPhase 3
Surgery care program for lung or upper GI cancer patients
This trial tests an “integrative” support program around the time of cancer surgery to see if it improves care and outcomes for people having surgery for lung, stomach, or esophagus cancer. It may help by adding extra structured support during the peri-operative (around-surgery) period.
Ottawa, OntarioAges 18 years+ - 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 probiotic?
- Yes. Clin2 currently lists 214 recruiting probiotic 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 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 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.