Clinical trials
Placebo clinical trials
Below are recruiting placebo clinical trials, each written for real people, not researchers. We’re tracking 5,154 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05726396RecruitingPhase 2
Microbiome therapy for steroid-resistant immune colitis
This Phase 2 pilot study tests a “restorative microbiota therapy” (RMT) to treat colitis caused by immune checkpoint inhibitors when standard treatments like steroids are not working. It aims to see if this approach is safe and practical, and may improve diarrhea and gut inflammation.
Brainerd, MinnesotaAges 18 years+ - NCT05739864RecruitingPhase 1/Phase 2
Test of donor gut bacteria for ulcerative colitis
This early-stage study tests whether a one-time transfer of “donor gut bacteria” can improve ulcerative colitis. It’s designed for people with mild to moderate ulcerative colitis who are stable on maintenance treatment.
Rome, LazioAges 18–75 - NCT05744479RecruitingPhase 4
Metformin to reduce weight gain from antipsychotic medicines
This trial tests whether metformin can help adults with intellectual disability who gained weight from long-term antipsychotic medicines. If you qualify, you may be assigned metformin to improve weight and related health measures.
Toronto, OntarioAges 16–65 - NCT05713877RecruitingPhase 2
Melatonin to treat confusion in ICU patients
This Phase 2 trial tests whether melatonin can reduce delirium, a sudden confusion that can happen in the ICU. If you qualify, you may be given melatonin to see if it improves alertness and comfort during an expected longer ICU stay.
Montreal, QuebecAges 18 years+ - NCT05713630RecruitingPhase 3
Tranexamic acid for symptomatic subdural blood clots
This trial studies whether tranexamic acid (a medicine that helps slow blood breakdown) can improve outcomes for people with symptomatic subdural hematoma—blood collecting between the brain and its outer covering. You may be able to join if you’re older, have bleeding seen on CT, symptoms linked to the bleed, and meet several safety and timing rules.
Toronto, OntarioAges 45 years+ - NCT05711082Recruiting
Testing brain monitoring and dopamine in healthy adults
This study tests how the brain responds during monitoring tasks related to dopamine (a brain chemical involved in movement and motivation). It’s meant for healthy volunteers, so you may help researchers understand how dopamine-related signals work in real time.
BronAges 18–45 - NCT05715411Recruiting
Light therapy for long sleep-onset insomnia
This trial studies whether timed light exposure can help people who have trouble falling asleep. It aims to improve insomnia symptoms by testing a light-based approach while carefully measuring sleep patterns.
StrasbourgAges 30–60 - NCT05730283RecruitingPhase 2
Preventing hearing damage from IV amikacin in NTM patients
This Phase 2 study looks at ways to prevent hearing damage (ototoxicity) in people with NTM lung infection who are treated with IV amikacin. If you qualify, the study may help protect your hearing while you receive a treatment that can sometimes affect hearing.
San Francisco, CaliforniaAges 18–80 - NCT05739071Enrolling by invitation
Herbal tea study for bladder cancer urinary tract symptoms
This study tests whether drinking JING SI herbal tea can help with urinary tract symptoms in people with bladder cancer receiving treatment directly into the bladder. You may be able to help researchers understand whether this tea improves day-to-day bladder-related symptoms.
Taipei, TaiwanAges 20–100 - NCT04063540RecruitingPhase 2
Amiloride to prevent migraine aura episodes
This study tests whether amiloride can reduce how often migraine aura happens. It’s a proof-of-concept early study, meaning the main goal is to see if the approach seems to work and is safe for people with frequent aura.
BronAges 18–80 - NCT05194397RecruitingPhase 2
Exercise plus NR supplement to boost fitness after stem-cell transplant
This trial tests whether a supervised exercise program, plus an NR supplement, can improve fitness in young people who have had an allogeneic (donor) stem-cell transplant for certain blood cancers or bone marrow conditions. It’s meant to help with energy and physical ability while monitoring safety.
Duarte, CaliforniaAges 10–30 - NCT04924270RecruitingPhase 2
Capsule stool transfer for newly diagnosed inflammatory bowel or joint disease
This Phase 2 study tests whether taking capsule stool (FMT) is safe and can help people who are newly diagnosed and haven’t started the usual medicines yet. Participants will also start the standard first-line treatment for their condition, and the study will compare safety and outcomes.
OdenseAges 18–75 - NCT05677971RecruitingPhase 3
Tested medicine to treat liver scarring in PiZZ alpha-1 disease
This Phase 3 study tests fazirsiran for safety and whether it can help people with a specific genetic form of alpha-1 antitrypsin–related liver disease that causes liver scarring. You may be eligible if you have the PiZZ genetic type and moderate-to-severe fibrosis, with certain lung and liver conditions ruled out.
Birmingham, AlabamaAges 18–75 - NCT05686642RecruitingPhase 2
Drug LT3001 for sudden stroke symptoms within 24 hours
This Phase 2 study tests LT3001 to improve recovery after an acute ischemic stroke (a stroke caused by blocked blood flow). It is designed for people who can be treated within 24 hours of symptom onset and who meet specific safety and health requirements.
Beijing, Beijing MunicipalityAges 18–80 - NCT05701969RecruitingEarly Phase 1
Melatonin for sleep during night shifts in residents
This early study tests whether melatonin can improve sleep patterns for doctors-in-training during overnight “night float” shifts. It may help you feel more rested and adjust to night work.
Charlottesville, VirginiaAges 18 years+ - NCT05681299RecruitingPhase 4
Testing growth hormone and liraglutide effects on hunger hormones
This study tests how growth hormone (GH) and liraglutide affect a hunger-related hormone system called AgRP. It compares effects in healthy people (lean or overweight) and in people with isolated GH deficiency, aiming to understand how these treatments change appetite and metabolism.
New York, New YorkAges 18–45 - NCT05703672RecruitingPhase 3
Switching smokers to e-cigarettes who do not want to quit
This study tests whether switching from regular cigarettes to e-cigarettes helps smokers who are not interested in quitting. You would also be offered varenicline and regular check-ins to compare outcomes over time.
Kansas City, MissouriAges 21 years+ - NCT05692024RecruitingPhase 1/Phase 2
Coffee and gut bacteria study after colon or rectal cancer
This early-phase study tests whether a coffee-related approach can change gut bacteria and blood “metabolites” after treatment for stage I–III colon or rectal cancer. The goal is to learn if these changes could help improve health after standard cancer treatment.
Boston, MassachusettsAges 18 years+ - NCT05702931RecruitingPhase 4
Semaglutide for high blood sugar after kidney transplant
This trial tests semaglutide, a medicine that helps lower blood sugar, in people who develop high blood sugar shortly after a kidney transplant. It may help control blood sugar without harming the transplanted kidney, while also checking safety in this specific group.
CopenhagenAges 18–80 - NCT05675930RecruitingPhase 2
Light therapy for mouth GVHD after a stem cell transplant
This Phase 2 study tests a special light treatment (photobiomodulation) to improve oral graft-versus-host disease (GVHD) after a stem cell transplant. It may help people whose mouth symptoms have not improved with at least one prior treatment.
Bethesda, MarylandAges 4 years+ - NCT05702398RecruitingEarly Phase 1
Vitamin A and niacinamide for high-risk skin cancer
This early trial tests whether adding vitamin A and niacinamide (a form of vitamin B3) can help people with a history of certain skin cancers reduce new disease. It is designed for adults with specific prior skin cancer or skin lesion treatment patterns.
Providence, Rhode IslandAges 18 years+ - NCT05705492RecruitingPhase 2
Olanzapine to help cancer-related weight and appetite loss
This Phase 2 trial tests whether olanzapine can help people with advanced cancer who are losing weight and not eating enough. It looks for improvements in appetite and weight while you receive your first-line palliative cancer treatment.
Portland, OregonAges 18 years+ - NCT05681572RecruitingPhase 3
Sedation before surgery to help kids feel better after anesthesia
This study tests whether giving a calming medicine before general anesthesia improves how children feel and experience anesthesia afterward. The goal is to see which pre-surgery approach works best and is comfortable for kids.
Montpellier, MontpellierAges 7–18 - NCT04594018RecruitingPhase 3
Test a hair lotion for male pattern hair loss
This Phase 3 study tests whether a specific hair lotion works and is safe for men with male pattern hair loss. It also checks that results are consistent while you keep similar hair care and avoid certain other hair-loss treatments.
Osasco, São PauloAges 18–60
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Common questions
- Are there clinical trials for placebo?
- Yes. Clin2 currently lists 5,154 recruiting placebo 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 placebo 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 placebo 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.