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
- NCT04650880Recruiting
Vitamin D study for irregular periods from PCOS
This trial studies whether taking vitamin D can improve ovulation (the release of an egg) in people with PCOS who have long, irregular menstrual cycles. It may help some participants have more regular ovulation and cycle timing, but you would be monitored with vaginal ultrasound and blood tests.
Hong KongAges 18–40 - NCT04653064Recruiting
Brain imaging study of how people feel heat and pain
This study uses MRI scans to understand how your brain responds to different feelings, including mild heat pain. It may help researchers learn more about pain and brain processing by comparing your responses during the tests.
Hanover, New HampshireAges 18 years+ - NCT04659317RecruitingPhase 3
Opioid-free pain plan for joint and arm surgeries
This Phase 3 study tests an opioid-free approach to pain control for certain orthopedic (bone/joint) surgeries. The goal is to help people manage surgical pain without using opioid pain medicines.
Atlanta, GeorgiaAges 18 years+ - NCT04678167Recruiting
Special “ring” glasses for vestibular neuritis symptoms
This trial tests whether wearing “ring” glasses helps reduce symptoms from vestibular neuritis, a condition that causes spinning vertigo and balance problems. Participants may get the glasses being tested or look-alike placebo glasses (or not wear glasses), so the study can tell if the glasses truly help.
BrestAges 18 years+ - NCT04678895RecruitingPhase 2
Low-dose naltrexone for nerve pain from diabetes
This Phase 2 trial studies whether a low dose of naltrexone can reduce painful nerve pain caused by diabetes. It may help people whose diabetic nerve pain did not improve with at least one standard treatment.
Lebanon, New HampshireAges 18 years+ - NCT04685148RecruitingPhase 1/Phase 2
Study of mental health treatment during pregnancy
This trial studies a treatment aimed at improving maternal mental health during pregnancy. It focuses on people who have had depression around pregnancy before, and checks whether the approach is safe and helpful for them.
CopenhagenAges 18–45 - NCT04697810RecruitingPhase 2
Test drug namodenoson for non-alcoholic fatty liver inflammation
This Phase 2 trial tests whether namodenoson can improve non-alcoholic steatohepatitis (NASH), a type of fatty liver inflammation. You may need two liver biopsies to see whether liver changes improve over time.
Banja LukaAges 18 years+ - NCT04703842RecruitingPhase 1/Phase 2
Study drug effect on heart muscle calcium in advanced heart failure
This trial tests a treatment intended to improve how heart muscle cells handle calcium, which may help heart failure symptoms and heart function. It is mainly for people with advanced heart failure and a low pumping strength of the heart.
San Diego, CaliforniaAges 18–80 - NCT04704271RecruitingPhase 1
Study on THC effects in people with past cannabis use
This Phase 1 study looks at how THC (the main mind-altering ingredient in cannabis) affects healthy volunteers shortly after use. It focuses on differences between people and includes those who have used cannabis before.
West Haven, ConnecticutAges 18–55 - NCT04707261RecruitingPhase 4
Testing how dapagliflozin affects anemia in heart failure
This trial studies whether dapagliflozin (a heart-failure medicine) can improve anemia in people with heart failure. It may help explain why some patients feel better and how anemia changes when this medicine is used.
Xiangtan, HunanAges 18–100 - NCT04713657RecruitingPhase 1
Beta-blocker study for heart muscle function in young babies
This trial tests whether a beta-blocker called propranolol can improve how well heart muscle cells work in very young babies with certain congenital heart conditions. It mainly looks at safety and how the medicine affects the heart, which could help guide future treatments.
New York, New YorkAges 4 weeks–2 months - NCT04715568RecruitingPhase 4
Testing how smoke exposure affects heart health
This study looks at whether being exposed to secondhand tobacco smoke at work affects heart and blood vessel health. It may help researchers understand which people are at higher risk and how the body responds to that exposure.
San Francisco, CaliforniaAges 40 years+ - NCT04721873RecruitingPhase 2
Weight-loss medicine for people with ulcerative colitis
This study tests whether a weight-loss medication, along with usual ulcerative colitis care, can help people who have both ulcerative colitis and obesity. It focuses on people with active symptoms or who need ongoing steroid medicine, and it also checks safety with heart, blood, infection, and mental-health screenings.
La Jolla, CaliforniaAges 18–80 - NCT04722978RecruitingPhase 3
Chemo plus moxifloxacin for metastatic triple-negative breast cancer
This trial tests whether adding moxifloxacin (an antibiotic) to standard chemotherapy helps people with metastatic triple-negative breast cancer live longer or respond better. You may qualify if your cancer has the right lab markers and you haven’t had treatment for metastatic disease yet.
Guangzhou, GuangdongAges 18–70 - NCT04723862RecruitingEarly Phase 1
Spironolactone to test sleep hormone patterns in teen girls
This early-phase study tests whether spironolactone can “normalize” a key hormone timing pattern during sleep and wake cycles in mid-to-late pubertal girls who have high male-hormone levels. The goal is to learn how this medicine may affect hormone rhythms related to conditions like PCOS.
Charlottesville, VirginiaAges 10–17 - NCT04724252RecruitingPhase 2/Phase 3
Gabapentin to help children use less opioid after surgery
This study tests whether gabapentin can reduce how much opioid pain medicine children need after certain major chest or heart surgeries. If it works, it may lower opioid-related side effects while still helping with postoperative pain.
Sacramento, CaliforniaAges Up to 17 years - NCT04734106RecruitingEarly Phase 1
Aloe vera for bladder pain and frequent urination
This early-stage study tests whether aloe vera can reduce symptoms of interstitial cystitis, such as bladder pain and frequent urination. You’d help researchers check both safety and symptom relief.
Winston-Salem, North CarolinaAges 18–80 - NCT04741646RecruitingPhase 2
Ferric citrate for kids with chronic kidney disease
This Phase 2 study tests ferric citrate, a medicine that helps control phosphate and iron balance, in children with chronic kidney disease. It may help slow problems related to kidney disease by improving lab measures like phosphate levels.
Los Angeles, CaliforniaAges 6–18 - NCT04745143RecruitingPhase 2
NMDA-enhancer medicine tested for schizophrenia without antipsychotics
This Phase 2 trial tests a single medicine intended to help people with schizophrenia who cannot take standard antipsychotic medications due to side effects or poor response. It may help reduce schizophrenia symptoms, but whether you can join depends on your diagnosis, medication history, and health conditions.
TaichungAges 18–65 - NCT04748601RecruitingPhase 4
Qudexy XR to help prevent migraine in kids ages 6 to 11
This study tests whether Qudexy XR can reduce migraine headaches in children ages 6 to 11. It looks for kids who are having frequent, disruptive migraine attacks and checks safety with careful medication rules.
Birmingham, AlabamaAges 6–11 - NCT04750616RecruitingPhase 2
NAD+ for heart injury prevention around non-emergency surgery
This Phase 2 trial studies whether adding NAD+ can reduce heart muscle injury around scheduled heart surgery. It may help protect the heart (and possibly kidneys) in people considered higher risk for complications.
San Francisco, CaliforniaAges 18 years+ - NCT04759001RecruitingPhase 1/Phase 2
Fecal treatment to clear gut bacteria resistant to antibiotics
This study tests a stool-based treatment (fecal microbiota treatment) to help remove “carbapenem-resistant” bacteria living in the gut. If you carry these bacteria without being sick, the goal is to reduce or stop that colonization.
RomeAges 18–90 - NCT04766177RecruitingPhase 3
Bumetanide for children with autism symptoms
This trial tests whether bumetanide can improve autism symptoms in children. It is for children aged 3 to 12 with autism diagnosed using a standard symptom rating scale.
TantaAges 3–12 - NCT04771156RecruitingPhase 4
Ketorolac pain relief during cleft palate repair
This trial tests whether ketorolac (a pain medicine similar to other NSAIDs) helps control pain during palatoplasty, the surgery to repair a cleft palate. It may help make recovery more comfortable for people having their first palate repair.
Houston, TexasAges 6 months+
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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.