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
- NCT06263452RecruitingPhase 4
Beta-blockers and stress response study
This trial tests how beta-blockers affect your body's reaction to stress. You'll take a beta-blocker or placebo and then do a stress task, so researchers can measure inflammation and other responses.
Chapel Hill, North CarolinaAges 18–30 - NCT06273046Recruiting
Biofeedback for bowel control problems
This trial tests a non-invasive biofeedback technique to help people regain control of bowel movements. It may be an option for those with frequent stool leakage or difficult constipation, but participants must not have certain other digestive or neurological conditions.
BarcelonaAges 18–75 - NCT06274528RecruitingPhase 2
DORA and lemborexant in Alzheimer's biomarkers study
This study is testing whether a sleep medication called lemborexant can improve sleep and reduce Alzheimer's-related proteins in healthy older adults with no memory problems. It could help find new ways to delay or prevent Alzheimer's disease.
St Louis, MissouriAges 65 years+ - NCT06267183RecruitingEarly Phase 1
Safety study of a new drug in healthy volunteers
This study tests a new investigational drug called SV001 in healthy volunteers to see if it is safe and how the body handles it. It is a first-in-human trial, meaning this drug has not been tested in people before.
ShanghaiAges 18–45 - NCT06256575Recruiting
Diosmin for healing finger ulcers in scleroderma
This study tests whether a natural supplement called diosmin can help heal finger and toe ulcers in people with scleroderma. If you have a current ulcer that is not infected, you may be able to join.
Calgary, AlbertaAges 18 years+ - NCT06128278RecruitingPhase 2
Equol supplement and blood vessel health in women
This study tests whether taking an Equol supplement (a soy-related compound) improves blood vessel function in postmenopausal women with and without chronic kidney disease (CKD). It could help women with or without early-stage CKD learn if this supplement supports heart health.
Aurora, ColoradoAges 50–69 - NCT06247085RecruitingPhase 3
A study testing pegtibatinase for classical homocystinuria
This trial tests an injectable drug called pegtibatinase for people with a rare condition called homocystinuria. It aims to lower high levels of homocysteine in the blood compared to a placebo, while you continue your usual treatments.
Phoenix, ArizonaAges 12–65 - NCT06233461RecruitingPhase 2
A study of TAK-279 for Crohn's disease
This study tests an oral medication called TAK-279 to see if it can safely reduce inflammation in the bowel for people with moderate to severe Crohn's disease who haven't had success with other treatments.
Murrieta, CaliforniaAges 18–75 - NCT06237452RecruitingPhase 3
VE303 to prevent repeat C. diff infections
This trial tests a new medicine called VE303, a live bacterial therapy, to prevent C. diff infections from coming back. It is for people who have had C. diff at least once in the last 6 months, or who are at high risk for a repeat infection due to age or other health problems.
Huntsville, AlabamaAges 12 years+ - NCT06252220RecruitingPhase 1
Testing a new drug for obesity in healthy adults
This trial tests a new medication called DA-1726 for people with obesity but no other major health problems. It aims to see if the drug is safe and how it works in the body. You may qualify if your body mass index (BMI) is between 30 and 45 and your weight has been stable for 3 months.
Miami, FloridaAges 18–65 - NCT06238700Recruiting
Studying allopregnanolone for depression in midlife women
This trial tests whether allopregnanolone, a natural brain chemical, can help depression in women going through menopause. It compares the effects against a placebo to see if it improves mood symptoms.
Boston, MassachusettsAges 40–60 - NCT06230861Recruiting
Quercetin supplement for heart and metabolic health
This study tests whether taking a supplement called quercetin (a natural plant compound) improves heart and metabolic health markers in healthy adults. You'd take the supplement for a period of time, and researchers will measure things like blood sugar and cholesterol.
Preston, LancashireAges 18–65 - NCT06249867RecruitingPhase 2
Study of darifenacin for people with ALS
This trial tests a medication called darifenacin (usually used for bladder problems) in people with ALS, to see if it is safe and if it might help slow the disease. If you join, you will take the study drug or a placebo and be closely monitored.
Ottawa, OntarioAges 18–85 - NCT06229483RecruitingPhase 3
Does tranexamic acid reduce bleeding during brain tumor surgery?
This study tests whether a medication called tranexamic acid (TXA) given during brain tumor surgery can reduce bleeding. If you are having a standard craniotomy for a tumor and don’t have certain health risks, you may be eligible.
Halifax, Nova ScotiaAges 18–80 - NCT06234631RecruitingPhase 2
CBD to reduce opioids after knee replacement
This study tests if a daily CBD capsule can help reduce the need for opioid pain pills after a first-time total knee replacement. It is for people with osteoarthritis who are having surgery and are willing to avoid cannabis for a short time before and after.
Ann Arbor, MichiganAges 18–80 - NCT06248671RecruitingPhase 2
Atorvastatin for preventing migraine attacks
This trial tests whether a daily dose of atorvastatin (a common cholesterol medicine) can prevent migraine attacks in people with episodic migraine. You would keep a headache diary and be randomly assigned to take atorvastatin or a placebo for about 3 months.
BergenAges 18–65 - NCT06230718Recruiting
Thinking about moving your arm after stroke
This study tests if thinking about moving your arm (motor imagery) and watching a video of arm movements can help you move better after a stroke. It uses a technique called EMG to measure muscle signals while you try or imagine moving.
Salamanca, SalamancaAges 18–99 - NCT06246396RecruitingPhase 4
Minocycline for resistant high blood pressure
This study tests whether minocycline, a common antibiotic, can help lower blood pressure in people whose high blood pressure is not controlled by multiple medications. If you have resistant hypertension, this trial may offer a new option to better manage your condition.
Gainesville, FloridaAges 18–100 - NCT06229678RecruitingEarly Phase 1
Ketones and diabetes drug for heart failure with weak pump
This clinical trial looks at whether adding a special diet supplement (ketones) to an SGLT2 inhibitor diabetes drug improves heart function and symptoms in people who have both type 2 diabetes and heart failure with a weakened heart muscle.
San Antonio, TexasAges 18–70 - NCT06245109RecruitingPhase 4
Pain medicine study for knee osteoarthritis
This study tests how well different pain medicines work for knee osteoarthritis and looks at brain patterns to understand why some people get more relief. It may help you find a treatment that works best for you.
Chicago, IllinoisAges 41 years+ - NCT06234501Recruiting
Does vitamin B6 help sensory issues in autism?
This trial tests whether taking a daily 100 mg vitamin B6 supplement can help with sensory reactivity in autistic adults. It involves taking either the vitamin or a placebo (fake pill) for a set period and reporting how your senses (like touch, sound, or light) feel.
ReadingAges 18–60 - NCT05519111RecruitingPhase 2
Cannabinoid treatment to lower inflammation and sickle pain
This Phase 2 study tests a cannabinoid medicine (dronabinol) to reduce inflammation and pain related to sickle cell disease. It may help you have less pain that interferes with daily life if you meet the study requirements and can safely avoid cannabis during the study.
New York, New YorkAges 18 years+ - NCT04098744RecruitingPhase 2
Artesunate vaginal inserts for high-grade cervical changes
This Phase 2 study tests whether artesunate vaginal inserts can help treat high-grade abnormal cells on the cervix (CIN2/3). It’s meant for adults who have a confirmed high-grade precancer change and can use birth control during the study.
Fort Myers, FloridaAges 25–100 - NCT06218056RecruitingPhase 2
CBD for reducing cigarette smoking in a treatment center
This study tests whether a daily dose of cannabidiol (CBD) can help people who smoke at least 5 cigarettes a day cut down or quit. It is for people staying at a treatment center in Los Angeles where cannabis use is not allowed.
North Hollywood, CaliforniaAges 18–65
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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.