Clinical trials
Placebo clinical trials
Below are recruiting placebo clinical trials, each written for real people, not researchers. We’re tracking 5,245 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT03713424RecruitingPhase 2
Brain scan study of an antibiotic for drug addiction
This study uses an MRI brain scan to see how taking clavulanic acid affects brain activity related to drug addiction. It may help researchers understand whether this medicine could change how addiction-related cues affect the brain.
Columbia, MissouriAges 18–65 - NCT03762395RecruitingPhase 2
Study of anti-inflammatory asthma molecules in adults
This Phase 2 study tests anti-inflammatory lipid mediators in people with asthma. You may be eligible if your asthma is not well controlled despite regular inhaler use and you meet the specific lung function and health criteria.
Aurora, ColoradoAges 18–65 - NCT03769766RecruitingPhase 3
Curcumin to help keep low-risk prostate cancer from worsening
This study tests whether curcumin (a supplement made from turmeric) can prevent low-risk prostate cancer from progressing while you stay on active surveillance. If you qualify, you would take curcumin and be monitored closely with regular checkups.
Dallas, TexasAges 40–89 - 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 - NCT03775837Recruiting
Ginseng extract to improve abnormal liver blood tests
This trial studies whether a Panax ginseng extract can improve liver-related blood test results in adults. It may help people with mildly to moderately elevated liver enzymes, while carefully excluding people with other liver causes.
YangsanAges 19–75 - NCT03781128RecruitingPhase 2
LSD for cluster headaches in a clinical study
This Phase 2 study tests whether a supervised dose of LSD (or a placebo) can reduce cluster headache attacks. It’s for people whose cluster headaches respond to oxygen, and who can safely pause certain medications and substances around the dosing day.
BaselAges 25–75 - NCT03783416RecruitingPhase 1
Ixazomib safety study for people with multiple sclerosis
This early-phase study tests how safe ixazomib is for people with multiple sclerosis (MS). It focuses on targeting certain immune cells in MS and checks whether the treatment can be given safely.
London, Greater LondonAges 18–65 - NCT03789552RecruitingPhase 3
Testing T89 to prevent chest pain during stable angina
This Phase 3 trial tests whether T89 reduces angina (chest pain caused by heart-related reduced blood flow) in people with stable angina. You may help confirm the treatment’s benefit by completing symptom tracking and exercise heart tests over several weeks.
Naples, FloridaAges 18–90 - NCT03794076RecruitingPhase 1/Phase 2
Testing adjunct cromoglicate for schizophrenia symptoms
This trial studies whether adding cromoglicate to your usual antipsychotic medicine can improve schizophrenia symptoms. It’s designed for outpatients who are already on a stable treatment and still have certain ongoing symptom scores.
Pittsburgh, PennsylvaniaAges 18–65 - NCT03807310Recruiting
Vitamin and fatty-acid supplement study for COPD recovery
This trial tests whether a targeted supplement (vitamins D and fatty acids) can help people with COPD. It’s meant for people who are medically stable and not currently dealing with a recent COPD flare-up.
Maastricht, LimburgAges 18 years+ - NCT03808922RecruitingPhase 3
DAS181 treatment for COVID-19 lung infection in immune-compromised adults
This Phase 3 trial tests DAS181 to treat lower lung (chest) viral infections in people with weakened immune systems, including a COVID-19 subgroup. It may help by targeting certain viruses in the lungs, but joining depends on your oxygen needs, recent diagnosis, and other safety factors.
Duarte, CaliforniaAges Any age - NCT03812874RecruitingPhase 1/Phase 2
Drug after chemo-embolization for liver cancer that can’t be removed
This Phase 1/2 study tests PTX-9908 (a study drug) to see if it’s safe and effective when given after TACE, a liver-directed treatment. It may help people with liver cancer that can’t be surgically removed and who have recovered enough from their recent TACE.
New Taipei City, TaiwanAges 20 years+ - NCT03817502RecruitingPhase 3
Cariprazine test for teens with schizophrenia
This trial tests whether cariprazine works and is safe for teens aged 13 to 17 with schizophrenia. It may help if your symptoms are still moderate to severe despite current care.
Culver City, CaliforniaAges 13–17 - NCT03821623RecruitingPhase 2
Vitamin-like nicotinamide riboside for higher blood pressure
This trial tests whether nicotinamide riboside can improve elevated blood pressure and blood vessel stiffness in middle-aged and older adults. You may be randomly assigned to take the study medicine or not, and the team will check your heart/blood vessel measurements over time.
Boulder, ColoradoAges 50 years+ - NCT03858751RecruitingPhase 1/Phase 2
Drug to activate a sleep-control pathway for sleep apnea
This early study tests a medicine that is meant to improve how your brain and breathing muscles work during sleep for obstructive sleep apnea (OSA). If you qualify, you would be monitored during sleep to see whether the treatment changes breathing events and oxygen levels.
Boston, MassachusettsAges 18–70 - NCT03860233RecruitingPhase 1
Oxytocin added to CPAP for obstructive sleep apnea
This early study tests whether adding oxytocin to your usual CPAP treatment improves obstructive sleep apnea. It may help see if oxytocin changes how well CPAP works or how people feel while using it.
Washington D.C., District of ColumbiaAges 18 years+ - NCT03866408RecruitingEarly Phase 1
Testing how insulin affects fat breakdown proteins
This early study looks at how insulin changes the body’s fat breakdown and related proteins. You might join if you’re within a certain body-weight range and can safely take the study medication.
Rochester, MinnesotaAges 18–55 - NCT03865290RecruitingPhase 2
Ondansetron for stomach nerve and motion problems in diabetes
This trial tests whether ondansetron can improve stomach “sensorimotor” problems—how the gut senses food and moves it—especially in people with diabetes and troubling indigestion. It may help reduce symptoms like early fullness, nausea, and discomfort after eating.
Rochester, MinnesotaAges 18–75 - NCT03875378RecruitingPhase 2
Transdermal estrogen treatment for anorexia-related bone loss
This trial studies whether estrogen delivered through the skin can help improve bone health in women with anorexia nervosa. It may be considered if your body weight is low and you have signs of bone thinning.
Pittsburgh, PennsylvaniaAges 19–45 - NCT03888924RecruitingPhase 2
BCG vaccine for people with radiologically isolated syndrome
This trial tests whether a BCG vaccine can help people who have radiologically isolated syndrome (RIS), a condition where MRI scans show signs of possible multiple sclerosis before symptoms develop. The study aims to see if vaccination is safe and can change disease behavior over time.
RomeAges 18 years+ - NCT03885245RecruitingPhase 2
L-citrulline supplement for overweight adults with later-onset asthma
This Phase 2 trial tests whether adding L-citrulline can improve asthma control in overweight adults whose asthma started later in life. It compares your asthma symptoms and lung testing results to see if the supplement helps when asthma is already being treated.
Durham, North CarolinaAges 18–65 - NCT03910010Recruiting
Brain scan study to study pain-related body signals in fibromyalgia
This study uses MRI brain scans to look for body “signals” (biomarkers) that may relate to chronic pain, including fibromyalgia. It may help researchers better understand what’s going on in the brain for people with long-term pain.
Halifax, Nova ScotiaAges 18–75 - NCT03910738RecruitingPhase 2
Testosterone treatment for nerve protection and myelin repair in MS
This Phase 2 study tests whether taking testosterone (for low testosterone levels) can help protect nerves and repair myelin in people with relapsing-remitting multiple sclerosis (MS). It may be most relevant if your MS is stable and you have low blood testosterone without current androgen treatment.
BesançonAges 18–55 - NCT03919461RecruitingPhase 2
Preventing colon and rectal cancer spread after surgery
This Phase 2 study tests medicines given around the time of colon or rectal cancer surgery to help lower the chance the cancer will later spread to other parts of the body. If you are planned for curative (potentially curable) surgery and have no signs of spread yet, the trial may help prevent future metastases.
AfulaAges 20–80
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Common questions
- Are there clinical trials for placebo?
- Yes. Clin2 currently lists 5,245 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.