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
- 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+ - NCT04794530RecruitingPhase 3
Cocoa extract trial for walking problems in blocked leg arteries
This Phase 3 study tests whether cocoa extract (cocoa flavanols) can improve walking ability and circulation in people with peripheral artery disease (PAD). It may help people who have PAD-related walking limits and can safely avoid competing cocoa sources and caffeine.
Chicago, IllinoisAges 55 years+ - NCT04789148RecruitingPhase 1
Nasal oxytocin trial for people with hormone deficiency
This early-phase study tests whether a spray of oxytocin in the nose can be given safely and may affect symptoms in people with arginine-vasopressin deficiency. You might qualify if your hormone levels are stable and you can safely take the nasal study medicine during the study period.
Boston, MassachusettsAges 18 years+ - NCT04798469RecruitingPhase 2
Testosterone to reduce long-term spine pain in men on opioids
This Phase 2 study tests whether taking testosterone can lessen chronic non-cancer spinal pain in men who have low testosterone while using opioid pain medicines. It may help by improving hormone levels that could be affecting pain and overall wellbeing.
Boston, MassachusettsAges 18 years+ - NCT04774159RecruitingPhase 3
Low-dose colchicine to lower risk in leg artery disease
This trial tests whether low-dose colchicine can reduce “residual” risk—future heart and blood-vessel problems—in people with peripheral artery disease (PAD). It targets PAD symptoms and complications like poor blood flow in the legs, even after certain procedures.
New Haven, ConnecticutAges 18 years+ - NCT04782830Recruiting
Wearable sensor study for low blood pressure on standing
This study uses an accelerometer (a wearable motion sensor) to measure symptoms and blood pressure changes when you stand up. It may help doctors better track how neurogenic orthostatic hypotension affects you and how well current treatments are working.
Nashville, TennesseeAges 40–80 - NCT04817618RecruitingPhase 3
Iptacopan for kidney inflammation in C3 glomerulopathy
This trial studies whether iptacopan can improve outcomes and safety for people with C3 glomerulopathy, a kidney disease caused by overactive parts of the immune system. Participants must already be on standard kidney-protecting medicines and meet specific kidney function and urine protein criteria.
Aurora, ColoradoAges 12–60 - NCT04804553RecruitingPhase 3
Apremilast for children with active juvenile psoriatic arthritis
This Phase 3 trial tests apremilast to treat active juvenile psoriatic arthritis (joint inflammation) in children and teens. You may be able to join if your child’s condition is active despite prior treatments or if they couldn’t tolerate them.
GhentAges 5–17 - NCT04775706RecruitingPhase 2
Test of sonefpeglutide for people with short bowel syndrome
This Phase 2 study tests whether sonefpeglutide is safe and how the body handles it (pharmacokinetics) in people with short bowel syndrome. It may help people who still need nutrition through a tube because their intestinal condition is stable.
Boston, MassachusettsAges 18 years+ - NCT04777357RecruitingPhase 3
Cariprazine for bipolar depression in ages 10 to 17
This Phase 3 study tests whether cariprazine can improve depression symptoms in children and teens with bipolar I disorder, and also tracks side effects. It may help if your depressive episode is ongoing and you meet specific mood and screening score requirements.
Bentonville, ArkansasAges 10–17 - NCT04781140RecruitingPhase 4
Viloxazine trial for preschool kids with ADHD
This study tests whether viloxazine extended-release can reduce ADHD symptoms in children ages 4–5. It also checks safety in preschool-age kids, including heart and nervous-system side effects.
Saraland, AlabamaAges 4 years–5.8 years - NCT04772079RecruitingPhase 3
Test drug safety and effectiveness for youth plaque psoriasis
This study checks whether deucravacitinib works well and is safe in children and teens with moderate to severe plaque psoriasis. It also looks at drug levels in the body to help understand how the treatment behaves over time.
Ciudad Autonoma de Buenos Aires, Buenos AiresAges 4–18 - NCT02484248RecruitingPhase 3
Ketotifen for kids with stomach pain and duodenal eosinophilia
This study tests whether ketotifen can improve long-lasting stomach pain in children whose biopsies show high levels of a certain immune cell type in the small intestine. It may help if standard stomach-acid medicines and montelukast did not work well enough.
Kansas City, MissouriAges 8–17 - NCT04153422RecruitingPhase 2
IVIG for small fiber nerve pain with specific antibody tests
This trial studies whether IVIG (an immune therapy made from donated antibodies) can reduce pain from autoimmune small fiber neuropathy. You may be a candidate if your tests show certain autoantibodies (TS-HDS, FGFR3, or Plexin-D1) and your symptom scores are high enough.
Glenview, IllinoisAges 18 years+ - NCT04770012RecruitingPhase 3
Aspirin or clopidogrel after heart transplant
This study tests antiplatelet medicines (like aspirin or clopidogrel) in people who have had a heart transplant. The goal is to see if these medicines can safely help prevent blood-related complications after transplant.
Vancouver, British ColumbiaAges 18 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 - 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+ - 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 - NCT04769206RecruitingPhase 1/Phase 2
Boost nerve signaling to improve blood vessel function
This study tests a treatment aimed at increasing “rest-and-digest” nerve activity to improve how blood vessels work, especially in people with vascular oxidative stress. It is designed for African American adults and looks at whether the intervention can improve blood vessel-related health markers.
Nashville, TennesseeAges 18–60 - NCT04743791RecruitingPhase 4
Dupilumab study for clearing mucus in moderate to severe asthma
This study tests whether dupilumab improves how well mucus is cleared from the airways in adults with moderate to severe asthma. It may help find better ways to reduce mucus-related breathing problems in people with a specific asthma type.
Pittsburgh, PennsylvaniaAges 18 years+ - 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 - 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 - NCT04752774RecruitingPhase 1/Phase 2
Botox-like injection study for arm spasticity after stroke
This trial tests whether IPN10200, a Botox-like treatment, is safe and helps reduce stiff, tight upper-arm muscles caused by spasticity after stroke or brain injury. You may be able to join if you meet specific timing, prior-treatment, and muscle-stiffness measurements.
Downey, CaliforniaAges 18–70
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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.