Clinical trials
Placebo - Control clinical trials
Below are recruiting placebo - control clinical trials, each written for real people, not researchers. We’re tracking 3,910 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04688736RecruitingPhase 2
Placebo vs allergy medicine to prevent transfusion reactions
This trial tests whether an allergy medicine (chlorpheniramine) can prevent allergic reactions during blood transfusions. You might be placed in either the medicine group or a placebo (inactive pill) group to compare side effects and reaction rates.
Hefei, AnhuiAges 18–65 - NCT04962776RecruitingPhase 4
Carb plus nitrate drinks before gynecologic surgery
This trial compares two pre-surgery drink plans: a low-sugar/low-concentration carbohydrate drink plus nitrates versus a carbohydrate drink alone. It aims to see which plan works better for patients having open gynecologic surgery.
CairoAges 18–60 - NCT05206955RecruitingPhase 3
Tadalafil versus placebo for Fontan circulation problems
This study tests whether tadalafil (a daily pill) can improve blood flow and protect organs in adults who have had Fontan surgery. Participants will either receive tadalafil or a placebo, and they will be monitored during a planned heart catheter procedure.
Rochester, MinnesotaAges 18 years+ - NCT05595499RecruitingPhase 2
Fisetin for better walking and strength in breast cancer survivors
This study tests whether fisetin (a natural compound) can improve physical function, like walking ability, in breast cancer survivors who feel frail. It may help strengthen muscles and improve daily activity after treatment.
Alhambra, CaliforniaAges Any age - NCT05007561RecruitingEarly Phase 1
Study of how opioids change feelings and brain responses to social events
This early-stage study looks at how opioids affect your experience of social situations and your brain activity. It may help researchers understand how opioid medicines influence social perception and brain signaling.
San Diego, CaliforniaAges 18–25 - NCT04818203RecruitingPhase 1/Phase 2
Autologous fibroblast injections for crow’s feet wrinkles
This study tests a safety and effectiveness approach for reducing crow’s feet (wrinkles at the outer corners of the eyes) using cells made from your own skin. You may be asked to stop other wrinkle treatments and have blood tests and injections at a specific skin area.
SeoulAges 19 years+ - NCT04957719Enrolling by invitationPhase 3
Testing selatogrel to prevent problems after a recent heart attack
This trial tests selatogrel to see if it can better prevent harmful heart and blood-clot outcomes after a recent heart attack. You may be considered if you had a heart attack in the past 4 weeks and have higher-risk heart artery disease.
Alexander City, AlabamaAges 18 years+ - NCT03962920Recruiting
Personalized care for urologic cancer based on gut and urine bacteria
This study looks at how your body’s bacteria (microbiome in and around the urinary/genital area) may help guide personalized treatment for localized urologic cancers. The goal is to see whether tailoring treatment to your bacteria could improve outcomes.
RoskildeAges 40–70 - NCT05267821RecruitingPhase 2/Phase 3
Testing anakinra to reduce inflammation in pediatric sepsis MODS
This study tests whether a medicine called anakinra can “turn down” harmful inflammation in children with severe illness from sepsis. It aims to improve organ function when multiple organs are starting to fail.
Birmingham, AlabamaAges 1 day–17 years - NCT04482478Recruiting
Edl treatment trial for functional indigestion symptoms
This trial studies whether EDL medicine can improve symptoms of functional dyspepsia (indigestion) and is safe for people with this condition. You may be asked to complete symptom questionnaires and undergo stomach testing to confirm there is no other cause for your symptoms.
Seongnam-si, Gyeonggi-doAges 19 years+ - NCT03935295RecruitingPhase 4
Dysport with a brace for teens with specific scoliosis curves
This trial studies whether adding Dysport (a botulinum toxin shot) to standard bracing can improve scoliosis in teens. It’s mainly for certain curve patterns and requires careful brace follow-through.
Baltimore, MarylandAges 10–16 - NCT03851640RecruitingPhase 3
Study drug for advanced prostate cancer that kept spreading despite standard treatments
This Phase 3 study tests HC-1119 soft capsules in men with metastatic castration-resistant prostate cancer—cancer that keeps progressing even when testosterone is blocked. It aims to see whether the drug works better than expected and is safe, especially after prior treatments like abiraterone and/or docetaxel.
ShanghaiAges 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+ - 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 - NCT01344200RecruitingPhase 2
Celecoxib drug study in children on leukemia treatment
This trial studies how celecoxib moves through a child’s body and how much reaches the fluid around the brain and spinal cord. It’s for children (age 2–12) who are in the maintenance phase of certain blood cancers, to better understand dosing and safety.
Ottawa, OntarioAges 2–12 - 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 - NCT04497220Recruiting
First-time epidural in pregnancy: poke versus placebo
This trial tests whether a “poke” (an added procedure or treatment) works better than a placebo to help with pain control for people getting an epidural for the first time during pregnancy. It’s mainly looking at whether the added approach is helpful and safe for first-time epidural patients.
Minneapolis, MinnesotaAges 18 years+ - NCT04555785RecruitingPhase 4
Testing platelet treatment in ICU patients after surgery
This trial studies whether a platelet-related treatment can work better in people in the ICU who need a platelet transfusion after surgery. It may help reduce bleeding by improving how platelets work when certain blood clotting proteins are already high.
BaselAges 18 years+ - NCT04232917RecruitingPhase 4
Testing a treatment to help clear genital high-risk HPV
This trial studies 2LPAPI® to see if it helps the body clear high-risk HPV infections in the cervix. It may be an option if you have a current HPV infection with mild/early abnormal cervical findings and can complete follow-up for about a year.
BrusselsAges 25–45 - NCT04120714Recruiting
tDCS brain stimulation for problematic internet gaming use
This trial tests whether a noninvasive brain stimulation method (tDCS) can help teens or adults reduce problematic internet gaming. It’s designed for people who meet diagnostic criteria for “pathological use of internet gaming.”
DijonAges 12 years+ - NCT04444440RecruitingPhase 4
Antibiotic prevention after bladder Botox for overactive bladder
This trial studies whether taking an antibiotic around the time of bladder Botox can lower the risk of urinary infections. It’s for women with overactive bladder who tried standard medicines but didn’t get enough relief.
Edmonton, AlbertaAges 18 years+ - NCT04597372RecruitingPhase 2
Tamsulosin for bladder urine retention after pelvic surgery
This trial studies whether tamsulosin can help drain the bladder when urine builds up after pelvic reconstructive surgery. It may help reduce the time and problems caused by “post-operative urinary retention.”
Pittsburgh, PennsylvaniaAges 18 years+ - NCT03977493RecruitingPhase 3
Xeomin injections for focal hand muscle spasms
This trial tests incobotulinumtoxinA (Xeomin) injections to reduce focal hand dystonia—unwanted muscle tightening in the hand. You may be able to join whether you’ve had this condition before or have tried similar injections in the past, as long as certain safety rules are met.
BernAges 18 years+ - NCT04281979Recruiting
Testing a substance’s effects in adult cigarette and vape users
This study tests how a specific substance affects people who currently smoke cigarettes or e-cigarettes. You may be able to join if you’re within a certain age range and recently had specific smoking and drinking patterns, and if you meet health/safety requirements for study procedures like MRI.
Portland, OregonAges 21–40
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Common questions
- Are there clinical trials for placebo - control?
- Yes. Clin2 currently lists 3,910 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.