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
- NCT05361733RecruitingPhase 1
Safety and blood-drug study of XFB19 in healthy adults
This Phase 1 study tests whether XFB19 is safe and tolerable in healthy adults and how the drug moves through the body (what the blood levels look like). You would be in the study to help researchers understand early safety and dosing information.
Knoxville, TennesseeAges 18–55 - NCT05337566Recruiting
Extra antibiotic before hysterectomy to prevent infections
This trial tests whether giving extra antibiotic (azithromycin) before hysterectomy can lower the chance of infections after surgery. You might benefit by helping prevent post-surgery infection, but it also depends on your allergy history and heart rhythm risks.
HelsinkiAges 18 years+ - NCT05312424RecruitingPhase 1/Phase 2
Testing an annatto-based treatment for statin muscle pain
This early-stage trial tests whether an annatto-derived product (called GG) can help people who develop new muscle pain after starting or increasing a statin. If you recently noticed statin-related muscle aches, this study may see whether the treatment improves symptoms and safety.
Lubbock, TexasAges 40 years+ - NCT05312892RecruitingPhase 1/Phase 2
Study for weight-related hormone signals in people with high blood pressure
This early-phase study looks at how the body’s “fight-or-flight” signals may be involved in weight gain (obesity) and high blood pressure. It may help researchers understand the biology and guide future treatments.
Nashville, TennesseeAges 18–65 - NCT05335928RecruitingPhase 3
Abatacept for immune-therapy heart inflammation in hospitalized adults
This Phase 3 trial tests abatacept to treat myocarditis (inflammation of the heart muscle) caused by immune checkpoint cancer medicines. It may help patients recover faster and safely manage this serious side effect while they are in the hospital.
Los Angeles, CaliforniaAges 18 years+ - NCT05334485RecruitingPhase 2/Phase 3
Pyridostigmine to treat slow bowel recovery after colorectal surgery
This trial tests whether pyridostigmine helps return bowel function faster after colorectal surgery when the gut is “stuck,” causing bloating and no gas or stool. It also checks safety and side effects compared with standard care.
Cleveland, OhioAges 18 years+ - NCT05359653RecruitingPhase 1/Phase 2
Clemastine to study MRI changes in relapsing MS
This early-phase study tests whether clemastine (a drug being studied for “myelin repair”) changes how MS looks on special MRI scans. It may help researchers understand if the treatment supports restoring nerve covering in people with relapsing-remitting MS.
San Francisco, CaliforniaAges 18–55 - NCT05350215RecruitingPhase 1/Phase 2
Testing atomoxetine and DAW2022 for obstructive sleep apnea severity
This study tests whether atomoxetine and DAW2022 can improve how severe obstructive sleep apnea is. It may help by changing breathing patterns during sleep, measured through physiology tests.
Boston, MassachusettsAges 21–70 - NCT05315726Recruiting
Vibration therapy to reduce stiffness after stroke
This trial studies whether regular muscle vibration can reduce post-stroke muscle stiffness and improve how the brain and nerves adapt. If you’re in the right stage after stroke, it may help improve arm and hand movement.
Chalon-sur-SaôneAges 18 years+ - NCT05333250RecruitingPhase 1/Phase 2
Modafinil to reduce cancer-related fatigue
This trial tests whether modafinil can improve cancer-related fatigue in people with advanced cancer. It may help you feel more able to function day to day by reducing how “worn out” you feel.
Ottawa, OntarioAges 18 years+ - NCT05322213RecruitingPhase 1
THC study for blood sugar control in type 2 diabetes
This early-phase study tests how THC (the main cannabis ingredient) affects blood sugar levels in people with type 2 diabetes. It may help researchers understand whether THC changes glucose control and what risks come with it.
La Jolla, CaliforniaAges 21–70 - NCT05362292RecruitingPhase 4
Treating bladder leakage to support mind and body health
This study tests medicines to reduce “urgency” urine leakage (when you suddenly feel you must go) and to see whether improving bladder control also helps overall mental and physical health. You may be eligible if you have had these symptoms for at least 3 months and can follow the study plan.
Palo Alto, CaliforniaAges 60 years+ - NCT05351229RecruitingPhase 4
Spinal morphine for pain control after lung surgery
This trial tests whether putting morphine into the spinal area during lung surgery can reduce pain after surgery for people having certain minimally invasive lung operations. It aims to improve comfort and possibly reduce the need for other pain medicines.
Chicago, IllinoisAges 18–80 - NCT05327699RecruitingEarly Phase 1
Ketamine study for depression with reduced pleasure
This early-phase study tests whether ketamine can help people with major depression who have trouble feeling pleasure. It also studies how the brain may change in response to stress, to better understand who might respond to treatment.
Atlanta, GeorgiaAges 18–65 - NCT05358834Recruiting
Melatonin study to change uterine contractions near delivery
This study tests whether taking melatonin affects uterine contractions (how strongly and how often the uterus tightens) in pregnant people close to delivery. It may help researchers understand whether melatonin can influence labor-related processes and timing.
Boston, MassachusettsAges 18–35 - NCT04965298RecruitingPhase 3
Lansoprazole add-on treatment for idiopathic pulmonary fibrosis
This Phase 3 study tests whether adding lansoprazole (a stomach acid medicine) can improve outcomes for people with idiopathic pulmonary fibrosis (IPF). You may already be on IPF “anti-fibrotic” medication, and the study checks if the added lansoprazole helps, compared with placebo.
Norwich, NorfolkAges 40 years+ - NCT05305287RecruitingPhase 4
Measuring liver energy use in people with diabetes and fatty liver disease
This study looks at how the liver uses energy (mitochondria) in people with type 2 diabetes and fatty liver disease. By understanding this, researchers may find better ways to treat liver problems.
San Antonio, TexasAges 18–80 - 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 - NCT05275686RecruitingPhase 2
Fluticasone spray system for long-term ear pressure problems
This Phase 2 study tests a new way of delivering a steroid medicine (fluticasone) through the nose to treat eustachian tube dysfunction, which can cause ear pressure, popping, or discomfort. It may help by reducing swelling around the eustachian tube so the ear can drain and equalize pressure better.
Los Angeles, CaliforniaAges 18–80 - NCT05301608RecruitingPhase 1/Phase 2
Psilocybin study of brain activity and changing thoughts
This Phase 1/2 study tests psilocybin to see how it affects brain signals and the “content” of thoughts while you are monitored during the study. Because participants must be generally healthy and mentally stable, it may be an option if you meet those safety and medication rules and are comfortable having your brain activity measured.
Baltimore, MarylandAges 18–75 - NCT05283421Recruiting
Improving tests for abnormal cervical cells after menopause
This trial is looking at better ways to diagnose changes in the cervix in women after menopause. It may help by improving how doctors decide which cervical abnormalities need attention and follow-up.
RandersAges 50 years+ - NCT05293600RecruitingPhase 1/Phase 2
Rescue medicine trial for sleep apnea after other treatments fail
This trial studies a “rescue” set of medicines for obstructive sleep apnea when two common treatments haven’t worked well enough. If you still have frequent breathing pauses during sleep, the study may test whether these medicines can reduce them and improve safety and symptoms.
Boston, MassachusettsAges 21–70 - NCT05269459RecruitingPhase 2
Cannabidiol (CBD) for PTSD symptoms in adults
This study tests whether CBD, a non-psychoactive compound from cannabis, can help reduce symptoms of post-traumatic stress disorder (PTSD) in adults. If you have PTSD and are interested in a non-traditional treatment option, this might be worth exploring.
Omaha, NebraskaAges 21–65 - NCT05278494Recruiting
Dextromethorphan to reduce pain after knee replacement
This trial studies whether dextromethorphan (a medicine sometimes used for cough) can reduce pain after total knee replacement surgery. If you’re having this operation and meet safety criteria, it may help improve how you feel during recovery.
Los Angeles, CaliforniaAges 18 years+
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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.