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
- NCT04036188RecruitingEarly Phase 1
Vitamin D and triamcinolone for plaque psoriasis
This early study tests whether taking vitamin D together with triamcinolone (a steroid used on skin) works better for plaque psoriasis than a standard approach. It aims to see if the combination helps clear psoriasis plaques and is safe.
Fairborn, OhioAges 18 years+ - NCT04117672RecruitingPhase 2
Test antisecretory treatment in severe brain injury
This Phase 2 study tests an “antisecretory factor” treatment in people with severe traumatic brain injury. It may help by improving harmful processes after injury, but your eligibility depends on specific brain-injury severity and monitoring needs.
LundAges 10–70 - NCT04120714Recruiting
tDCS brain stimulation for problematic internet gaming use
This trial tests whether a noninvasive brain stimulation method (tDCS) can help teens or adults reduce problematic internet gaming. It’s designed for people who meet diagnostic criteria for “pathological use of internet gaming.”
DijonAges 12 years+ - NCT03949855RecruitingPhase 2
Belimumab plus rituximab for primary membranous nephropathy
This study tests whether adding belimumab to rituximab helps people with primary membranous nephropathy (a kidney disease) that has the right blood test marker and specific protein levels. The goal is to improve kidney outcomes and reduce disease activity while keeping treatment safe.
Birmingham, AlabamaAges 18–75 - NCT03937661RecruitingPhase 2/Phase 3
Platelet-rich plasma injected into ovaries for poor egg responders
This trial studies whether an injection of your own “platelet-rich” plasma into the ovaries can improve egg production in people who respond poorly to fertility treatment. It targets women with low egg reserve and tries to see if this approach helps them get better results from stimulation.
AthensAges 35–47 - NCT03947450RecruitingPhase 2
Injection of your own skin cells into below-knee amputation site
This Phase 2 study tests whether injecting a patient’s own fibroblast cells (skin-support cells) into the wound area after a below-knee amputation can help the stump skin heal and work better. It’s intended for people who already have (or are close to having) a prosthetic fitting.
Baltimore, MarylandAges 18–65 - NCT03983369RecruitingPhase 3
Laser treatment to help prevent painful mouth sores from chemo
This trial tests whether low-level laser therapy (using special light on the mouth) can prevent or reduce mouth sores caused by chemotherapy in children and young adults. It may help you avoid painful inflammation that can affect eating, comfort, and treatment.
Villejuif, Val de MarneAges 4–25 - NCT03977493RecruitingPhase 3
Xeomin injections for focal hand muscle spasms
This trial tests incobotulinumtoxinA (Xeomin) injections to reduce focal hand dystonia—unwanted muscle tightening in the hand. You may be able to join whether you’ve had this condition before or have tried similar injections in the past, as long as certain safety rules are met.
BernAges 18 years+ - NCT03972124RecruitingPhase 2
Cannabis to prevent migraine attacks before they start
This Phase 2 trial tests whether using cannabis can prevent migraine attacks from happening. It specifically looks at people with chronic migraine who have tried and not benefited from other prevention medicines.
Calgary, AlbertaAges 25 years+ - NCT04025359RecruitingEarly Phase 1
Test dronabinol for pain responses in people on opioid treatment
This early-stage study tests whether dronabinol (a form of THC) changes pain perception in people with opioid use disorder who are already stable on methadone or buprenorphine. It may help researchers understand whether this treatment affects pain and drug-related outcomes in a safer, controlled way.
West Haven, ConnecticutAges 18–70 - NCT03951194RecruitingPhase 2/Phase 3
Platelet-rich plasma infusion for perimenopausal women
This trial tests whether infusing a concentration of your own blood platelets into the ovary can help regulate menstrual cycles and improve ovarian function in women going through perimenopause.
AthensAges 40–50 - NCT03934905RecruitingPhase 1/Phase 2
Sulforaphane supplement to protect the heart during doxorubicin
This trial tests whether a nutritional supplement called sulforaphane (SFN) can help protect heart function in people with breast cancer who are receiving doxorubicin (a chemotherapy that can affect the heart). Participants take caplets and have heart and safety monitoring to see if the supplement reduces heart-related side effects.
Lubbock, TexasAges 18–89 - NCT03954483Recruiting
Ear test studies brain wave rhythms for adults
This trial measures a specific brain rhythm (theta waves) using sensors placed on or near the ear canal. It’s mainly looking for healthy adults who can safely complete ear, hearing, and balance checks.
Winnipeg, ManitobaAges 18–40 - NCT03954899Recruiting
Melatonin test for brain health in older adults
This study tests whether taking 5 mg of melatonin can improve thinking and brain health over time in older adults with early, mild symptoms. You may help researchers learn which brain changes and measures improve with melatonin.
Iowa City, IowaAges 56–85 - NCT03889743RecruitingPhase 4
Steroid treatment to help prevent asthma after a first wheezing illness
This trial studies whether an early steroid treatment can lower the chance that children will go on to develop asthma after their first severe “wheezing” episode caused by a rhinovirus (a common cold virus). If you qualify, the goal is to prevent future asthma rather than just treat the current episode.
TurkuAges 3 months–1.9 years - NCT03970720RecruitingPhase 2
Metoclopramide to improve low-blood-sugar warning in type 1 diabetes
This Phase 2 study tests whether metoclopramide can help people with type 1 diabetes better notice when their blood sugar is getting too low. If low-blood-sugar warning is unreliable for you, this could help improve safety and control.
Lexington, KentuckyAges 20–60 - NCT03983603Recruiting
Plant stanols and asthma symptoms prevention
This trial tests whether eating plant stanols (a natural substance found in some foods) can help prevent asthma symptoms in people with stable allergic asthma. You would need to take a daily chew and avoid certain cholesterol-lowering products during the study.
Maastricht, LimburgAges 18–70 - NCT03667326RecruitingPhase 2
Low-dose aspirin after severe preeclampsia
This Phase 2 study tests whether starting low-dose aspirin after delivery can help people who had severe preeclampsia. The goal is to see if this treatment is safe and beneficial in the weeks after birth.
New York, New YorkAges 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 - NCT03736538Enrolling by invitationPhase 1
Nitrous oxide for suicidal thoughts in depression
This Phase 1 study tests whether breathing nitrous oxide can safely reduce suicidal thoughts in adults with major depression. It may help people whose depression is causing moderate to severe suicidal thinking, by studying a fast-acting treatment approach.
St Louis, MissouriAges 18–65 - 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+ - 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 - 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 - 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
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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.