Clinical trials
Placebo - Control clinical trials
Below are recruiting placebo - control clinical trials, each written for real people, not researchers. We’re tracking 3,902 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06639126Enrolling by invitation
Thyme extract for functional gut issues
This trial tests whether a wild thyme extract can help with functional gastrointestinal disorders (common digestive problems without a clear cause). It focuses on the extract's anti-inflammatory and metabolism-related effects.
Granada, GranadaAges 18–75 - NCT06638710RecruitingPhase 2
Testing oral midazolam for care in elderly with dementia who refuse care
This trial tests if giving a medication called midazolam by mouth can help older adults with memory problems who refuse care to accept it more calmly. It is for people in certain hospital or long-term care units, with moderate to severe memory loss and a history of resisting care.
Grenoble, IsereAges 60 years+ - NCT06634056RecruitingPhase 2
Preventing lung inflammation during chemoradiation for stage III lung cancer
This trial tests whether two medicines, pentoxifylline and vitamin E, can help prevent a type of lung inflammation called pneumonitis in people with stage III non-small cell lung cancer who are getting chemoradiation and a checkpoint inhibitor. These medicines are already used for other conditions and may lower the risk of this side effect.
Toronto, OntarioAges 18 years+ - NCT06643221RecruitingEarly Phase 1
Exercise as a booster for cell therapy treatments
This trial tests whether exercise and a heart medicine called isoproterenol can help your immune system work better with donor cell therapies. It may show how to make these treatments more effective.
Tucson, ArizonaAges 21–55 - NCT06635902RecruitingPhase 2
Citrulline for sickle cell pain crisis
This trial tests if an intravenous medication called L-citrulline can help treat pain crises in children and young adults with sickle cell disease. Participants receive either the study drug or a placebo while in the hospital for a severe pain episode.
Washington D.C., District of ColumbiaAges 4–21 - NCT06639984RecruitingPhase 2
Psyllium for kids with IBS
This study tests if psyllium, a fiber supplement, helps reduce belly pain and other symptoms in children with irritable bowel syndrome (IBS). It may be an option if standard treatments haven't worked well.
Durham, North CarolinaAges 12–17 - NCT06639464RecruitingPhase 2
Semaglutide for improving opioid recovery outcomes
This study tests whether semaglutide (a medication used for weight management) can help people on buprenorphine or methadone reduce their opioid use. If it works, it could provide additional support during recovery.
Boston, MassachusettsAges 18 years+ - NCT03646058RecruitingPhase 3
Add-on buprenorphine to ease suicidal thoughts in depression
This Phase 3 study tests whether adding buprenorphine to your usual pain-dose medicines can reduce severe suicidal thoughts during a major depressive episode. It may help people who are currently hospitalized or closely followed and have higher scores for both depression severity and suicidal thinking.
Bordeaux, FranceAges 18–65 - NCT05762952RecruitingPhase 1
Dapagliflozin study for heart micro-blood-flow symptoms in women
This early-phase study tests whether dapagliflozin can improve tiny blood-vessel function in women who have heart-ache-like symptoms but no major blockage on heart scans. If it works, it may help symptoms related to “microvascular” heart circulation problems.
Charlottesville, VirginiaAges 18–99 - NCT04959864Recruiting
Food supplement study for sperm DNA damage in men
This trial tests whether a daily food supplement (with myo-inositol, N-acetyl-cysteine, zinc, and vitamins) can reduce sperm DNA damage. It enrolls men with higher-than-normal sperm DNA fragmentation, and it checks semen health during the study.
ParisAges 20–45 - NCT06629090RecruitingPhase 2
Brain blood vessel responses to blood flow changes: younger adults
This study looks at how the brain's blood vessels respond to changes in blood flow in healthy younger adults. It helps researchers understand normal brain aging.
Madison, WisconsinAges 20–40 - NCT06618820Enrolling by invitationPhase 3
Extended tranexamic acid after knee replacement
This trial tests whether taking tranexamic acid (a medicine that helps blood clot) for several days after knee replacement surgery reduces bleeding and improves recovery. It may help patients who have a standard knee replacement and are not on blood thinners.
Germantown, TennesseeAges 18 years+ - NCT06630884RecruitingPhase 1
Immune response to trauma and fear
This study looks at how the body's immune and stress systems work together in people who have experienced trauma, by giving a harmless vaccine to temporarily boost inflammation. It may help explain why some people develop PTSD and others don't, which could lead to better treatments.
San Francisco, CaliforniaAges 18–65 - NCT06620809RecruitingPhase 1
New treatment for neuromyelitis optica flare-ups
This trial tests a new medicine (NouvSoma001) for people with neuromyelitis optica (NMOSD) who are having a flare-up. The goal is to see if the treatment is safe and if it helps reduce symptoms like pain and trouble moving.
Wuhan, HubeiAges 18–65 - NCT06629077RecruitingPhase 2
Brain blood vessel response to blood flow changes
This study looks at how blood vessels in the brain react when blood flow changes. It may help researchers understand how the brain adapts with age.
Madison, WisconsinAges 55–69 - NCT06632379RecruitingPhase 4
Atorvastatin after pregnancy to lower heart risk
This trial tests if taking atorvastatin, a common cholesterol medication, after delivery can reduce future heart problems in women who had high blood pressure or preeclampsia during pregnancy. It lasts for 6 months and includes participants who are at least 20 years old.
Columbus, OhioAges 20–50 - NCT06627868Recruiting
NAD+ metabolism in human brown fat
This study explores how the body's natural substance NAD+ works in brown fat, a type of fat that burns calories. It may help researchers understand metabolism and find new ways to treat obesity.
TurkuAges 30–65 - NCT06628349Recruiting
Protein Study for Older Adults with COPD
This study looks at how two types of protein drinks (one from plants, one from whey/dairy) affect muscle and metabolism in older adults who have COPD. You'll lie in a bed for several hours while researchers measure your body's response to the protein. The goal is to find which protein might better help maintain muscle strength.
College Station, TexasAges 50–95 - NCT06620523RecruitingPhase 2
Preventing kidney injury after heart bypass surgery
This trial tests whether combining two natural supplements (CoQ10 and glutathione) can protect your kidneys during heart bypass surgery. It may help prevent acute kidney injury, a common complication after these procedures.
Washington D.C., District of ColumbiaAges 18–70 - NCT06629259RecruitingPhase 2
Guanfacine for Alcohol Use Disorder
This trial tests if guanfacine, a medication that calms certain brain signals, can help people reduce or stop drinking. You may qualify if you have moderate to severe alcohol use disorder and want to quit.
Indianapolis, IndianaAges 18 years+ - NCT06319274RecruitingPhase 2
Prostacyclin for lung infection patients on a ventilator
This study tests a medicine called prostacyclin (given through a vein) to see if it helps people on a breathing machine with a lung infection. The goal is to reduce inflammation and improve recovery.
CopenhagenAges 18 years+ - NCT06619860RecruitingPhase 2
VX-993 for diabetic nerve pain
This trial tests a new medicine called VX-993 for people with diabetes who have had nerve pain in both feet or legs for at least a year. The goal is to see if it reduces pain and is safe.
Cullman, AlabamaAges 18–80 - NCT06628908RecruitingPhase 3
Study of suzetrigine for painful diabetic nerve damage
This trial tests an experimental medicine called suzetrigine to see if it can safely reduce pain caused by nerve damage from diabetes (diabetic peripheral neuropathy). It might be an option if you have had daily pain in both legs and current treatments haven't worked well enough.
Anniston, AlabamaAges 18–80 - NCT06619990RecruitingPhase 1/Phase 2
Study of XmAb942 for active ulcerative colitis
This study tests a new drug called XmAb942 for people with moderate to severe ulcerative colitis. It aims to see if the drug can reduce inflammation and improve symptoms when other treatments haven't worked well enough or caused side effects.
Scottsdale, ArizonaAges 18–75
Hear when a new Placebo - Control trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
Common questions
- Are there clinical trials for placebo - control?
- Yes. Clin2 currently lists 3,902 recruiting placebo - control 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 - control 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 - control 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.