Clinical trials
Placebo clinical trials
Below are recruiting placebo clinical trials, each written for real people, not researchers. We’re tracking 5,158 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05649605Recruiting
Testing early response to gender-affirming hormone treatment
This study looks at how people respond early after starting gender-confirming hormones. It may help doctors understand what changes happen soon after treatment starts and how to manage it safely.
StockholmAges 18–99 - NCT05408247RecruitingPhase 4
N-acetylcysteine to help people cut back on alcohol
This trial tests whether N-acetylcysteine (a supplement-like medicine) can help people with alcohol use disorder reduce or stop drinking. You may be randomly assigned to receive N-acetylcysteine or a comparison treatment, and you’ll complete interviews during the study.
Sydney, New South WalesAges 18–70 - NCT05732051RecruitingPhase 2
Nicotinamide riboside to protect the heart during breast cancer chemo
This trial tests whether nicotinamide riboside can help prevent heart problems caused by a common breast-cancer chemotherapy (anthracyclines). If you’re eligible, you’ll be followed to see how your heart is doing during treatment.
Lørenskog, AkershusAges 18 years+ - NCT05667090Recruiting
High-dose vitamin D3 to ease chronic pain in dialysis patients
This study tests whether taking a very high dose of vitamin D3 can reduce moderate to severe chronic pain in people on hemodialysis. It may help by improving vitamin D-related pathways that could affect pain, but you must also meet specific health and testing requirements.
TaipeiAges 20 years+ - NCT05259904RecruitingPhase 2
L-citrulline supplement for deployment-related asthma symptoms
This trial studies whether an L-citrulline supplement can improve asthma control in people who developed persistent asthma symptoms after military deployment. If you qualify, you may be asked to track symptoms and breathing test results to see if the supplement helps.
Denver, ColoradoAges 18–70 - NCT05832580RecruitingPhase 3
Preventing calcium buildup in skin, eyes, and blood vessels
This Phase 3 study tests a medicine to help prevent abnormal calcium (called ectopic mineralization) from building up in people with pseudoxanthoma elasticum (PXE). It aims to slow or reduce new damage over time.
UtrechtAges 18–50 - NCT05851014RecruitingPhase 3
GB491 plus letrozole for HR+ HER2- advanced breast cancer
This Phase 3 study tests whether GB491 used together with letrozole works better for hormone receptor–positive and HER2-negative advanced breast cancer. You may be eligible if you have not had certain prior cancer treatments and your health tests are within safe limits.
Bengbu, AnhuiAges 18–75 - 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 - NCT05899660Recruiting
Omega-3 for alcohol use disorder during withdrawal
This trial studies whether taking omega-3 supplements during a hospital alcohol-withdrawal program can improve recovery for people with alcohol use disorder. It may help by changing inflammation and how the body responds to stopping alcohol.
BrusselsAges 18–70 - NCT03570450RecruitingPhase 1
Stem cell treatment for non-lacunar stroke after the first day
This early-phase study tests a stem cell treatment for certain types of stroke, focusing first on safety and the right dose. It may help doctors learn whether the treatment is safe and potentially beneficial when given soon after stroke begins.
GrenobleAges 18 years+ - NCT05275738Recruiting
Nicotinamide treatment for glaucoma progression
This trial studies whether nicotinamide (a form of vitamin B3/niacin) can slow or affect glaucoma progression. You may be eligible if you have newly diagnosed, untreated glaucoma or if you have treated glaucoma with measurable visual field changes.
StockholmAges 18 years+ - NCT05961644RecruitingPhase 2/Phase 3
Cladribine vs placebo for non-active progressive multiple sclerosis
This trial tests whether cladribine (vs an inactive placebo pill) can slow disability worsening in people with a non-active, progressive form of multiple sclerosis. It may help by reducing the immune activity that can drive ongoing nerve damage, even without recent relapses.
Warsaw, Masovian VoivodeshipAges 30–65 - NCT05962840RecruitingPhase 4
Rituximab plus telitacicept for ANCA vasculitis
This Phase 4 trial studies whether rituximab combined with telitacicept works better and is safe for people with severe active ANCA-associated vasculitis (including certain subtypes like GPA or MPA). If you meet specific blood test and disease activity criteria, you may be considered to help lower inflammation and prevent flare-ups.
BeijingAges 18–65 - NCT05623267RecruitingPhase 2/Phase 3
SugeMalimab after lung radiation and chemotherapy for limited-stage SCLC
This trial tests sugemalimab as “extra treatment” after standard chemoradiation for limited-stage small cell lung cancer. It aims to lower the chance of the cancer coming back by helping the immune system stay active after initial therapy.
Guangzhou, GuangdongAges 18 years+ - NCT04985344RecruitingPhase 3
Propranolol to treat PTSD symptoms in children using memory reactivation
This trial studies whether propranolol (a heart-related medicine) can help children with post-traumatic stress disorder (PTSD) after a special memory-activation session. The goal is to reduce PTSD symptoms compared with the comparison condition.
ToulouseAges 7–12 - NCT04558112RecruitingPhase 2
Levodopa for improving learning in PTSD
This study tests whether a medicine called levodopa, combined with brain imaging, can help improve learning and memory in people with PTSD. The goal is to see if it can help you better process trauma-related thoughts and improve your quality of life.
Austin, TexasAges 21–50 - NCT06050148RecruitingPhase 2/Phase 3
Fecal Transplant to Prevent Repeat Urinary Tract Infections
This trial tests whether a fecal microbiota transplant (a procedure that transfers healthy bacteria from a donor's stool into your gut) can help prevent repeat urinary tract infections in women who have frequent infections.
HelsinkiAges 18–90 - NCT05825092RecruitingPhase 2
Early testosterone gel for people on breathing machines
This Phase 2 study tests whether starting testosterone gel soon after ICU admission can improve physical performance in critically ill adults who need a breathing machine for more than 48 hours. It’s also designed to check safety in this setting.
BordeauxAges 18–79 - NCT06092736RecruitingPhase 4
Danshen pill for chest pain with normal arteries
This trial tests if a traditional Chinese medicine pill (compound Danshen dripping pill) can help people who have chest pain on exertion but whose heart arteries appear normal or nearly normal on scans. If you have this type of chest pain and fit the criteria, you may be able to join.
Jinan, ShandongAges 30–75 - NCT06088745RecruitingPhase 3
Shingles vaccine trial for adults 40+
This trial tests a new shingles vaccine to see how well it prevents shingles in adults aged 40 and older. It aims to help those who have not had shingles recently or been vaccinated against it before.
Zhenjiang, JiangsuAges 40 years+ - NCT06106685RecruitingPhase 1/Phase 2
Washed microbiota transplant for chronic constipation
This trial tests a treatment called washed microbiota transplantation (a procedure that delivers healthy gut bacteria to your colon) for adults with chronic constipation. The goal is to see if it can improve bowel movements without the need for laxatives.
Nanjing, JiangsuAges 18–70 - NCT05908695RecruitingPhase 4
GV-971 treatment for mild to moderate Alzheimer’s disease
This Phase 4 trial tests whether a medicine called sodium oligomannate (GV-971) is safe and effective for people with mild to moderate Alzheimer’s disease. It may help slow or improve memory and thinking symptoms while carefully tracking side effects.
Huainan, AnhuiAges 50–85 - NCT05469165RecruitingPhase 2
Testing serotonin blockers after a first heart attack
This Phase 2 trial tests whether blocking serotonin receptors can help after a first heart attack that has caused a specific type of leaking mitral valve problem. It aims to see if the treatment improves heart function and heart-valve measurements while keeping patients safe.
QuébecAges 18–80 - NCT05923905RecruitingPhase 4
Study of FB1006 for people with early ALS
This trial tests whether FB1006 is safe and works better than usual care for treating amyotrophic lateral sclerosis (ALS). It focuses on people with relatively early ALS and good breathing function.
Beijing, Beijing MunicipalityAges 18–80
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Common questions
- Are there clinical trials for placebo?
- Yes. Clin2 currently lists 5,158 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.