Clinical trials
Placebo - Control clinical trials
Below are recruiting placebo - control clinical trials, each written for real people, not researchers. We’re tracking 3,955 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07453823Recruiting
Synbiotic for gut health in overweight adults
This trial tests a combination supplement (a synbiotic) to see if it can improve gut function and gut bacteria in middle-aged and older adults who are overweight and have constipation. If eligible, you take the supplement daily and report how your digestion feels.
Cork, BlackpoolAges 50–70 - NCT07379866Recruiting
Nerve blocks for pain relief after tonsil removal in children
This trial tests if injecting numbing medicine near certain nerves in the head and neck can reduce pain after tonsil and adenoid surgery in children aged 5–13. It may help them recover more comfortably.
Cairo, GovernorateAges 5–13 - NCT05923086RecruitingPhase 2
Preventing stomach and gut problems after a specific gynecologic surgery
This Phase 2 study tests a plan to reduce stomach and bowel side effects after a gynecologic operation done with a longitudinal laparotomy (a specific type of incision). It uses a peridural catheter (a small tube for numbing medicine) to help prevent gastrointestinal disturbance after surgery.
BonnAges 18–75 - NCT07625358Recruiting
How Caffeine and Alcohol Affect Your Eyes
This study measures how caffeine and alcohol change the size of your pupils (the dark circles in your eyes). Researchers want to understand how these common substances affect your eye's natural responses, which could help with vision and neurological research.
SingaporeAges 30–50 - NCT07615868RecruitingPhase 1
New blood-thinner study for heart disease patients in China
This study tests a new medication called selatogrel in people with chronic coronary syndrome (long-term heart disease caused by narrowed heart arteries). Researchers want to see how the body processes this drug and whether it helps prevent future heart problems.
BeijingAges 18–85 - NCT06762964RecruitingPhase 2
Dapagliflozin for Failing Fontan Circulation
This study tests whether a medication called dapagliflozin (a pill for heart failure) can help people with a Fontan circulation who feel short of breath. It aims to improve symptoms and quality of life.
Rochester, MinnesotaAges 18 years+ - NCT06930456Enrolling by invitation
Comparing two drugs to prevent low blood pressure during spinal anesthesia
This study tests if giving hydrocortisone (a type of steroid) or ondansetron (an anti-nausea drug) before spinal anesthesia can better prevent low blood pressure during surgery for your belly or lower leg.
Port Said, Port Said GovernorateAges 21 years+ - NCT07534241Recruiting
Reishi Mushroom for Fatty Liver Disease
This study tests whether reishi mushroom (a type of fungus) can improve liver health in people with metabolic dysfunction-associated fatty liver disease—a condition where fat builds up in the liver. Researchers want to see if this natural supplement can reduce liver inflammation and improve blood sugar and cholesterol levels.
LahoreAges 35–65 - NCT06303128RecruitingPhase 3
Testing penicillin allergy with one vs. two oral doses
This trial compares a single dose versus two doses of a penicillin-like drug to see if people who think they are allergic to penicillin can safely be told they are not allergic. It is for people with a low-risk penicillin allergy who want to find out if they can use these antibiotics in the future.
Lubbock, TexasAges 18–89 - NCT07533955RecruitingPhase 1
Testing JADE201 drug in rheumatoid arthritis patients
This early-stage study tests a new drug called JADE201 in people with rheumatoid arthritis (RA). Researchers want to see if it is safe and how the body handles it, which could lead to better RA treatments.
Chisinau, MoldovaAges 18–70 - NCT07606950RecruitingPhase 3
Testing HRS-5635 to improve hepatitis B treatment
This study tests whether adding a new drug called HRS-5635 to your current hepatitis B medicine works better than your current treatment alone. You may qualify if your hepatitis B is already controlled with antiviral pills and your viral levels are very low.
Guangzhou, GuangzhouAges 18 years+ - NCT05358834Recruiting
Melatonin study to change uterine contractions near delivery
This study tests whether taking melatonin affects uterine contractions (how strongly and how often the uterus tightens) in pregnant people close to delivery. It may help researchers understand whether melatonin can influence labor-related processes and timing.
Boston, MassachusettsAges 18–35 - NCT07695207RecruitingPhase 3
Testing SMZ1 with ranibizumab for wet macular degeneration
This trial tests a new medicine called SMZ1 combined with ranibizumab (a standard treatment) for people with wet macular degeneration. It may help improve vision by targeting the cause of the disease more effectively.
Seoul, SeoulAges 50 years+ - NCT06082037RecruitingPhase 3
Testing belumosudil for chronic lung allograft dysfunction after transplant
This trial tests an oral medication called belumosudil for people with chronic lung allograft dysfunction (CLAD) after a double lung transplant. It may help slow the decline in lung function.
Birmingham, AlabamaAges 18 years+ - NCT06351150RecruitingPhase 3
Testing angiotensin II for refractory distributive shock
This study tests an injection of angiotensin II (a substance that helps tighten blood vessels) versus a placebo for patients with distributive shock that is not responding to standard treatments. It may help raise blood pressure and improve outcomes.
Hefei, AnhuiAges 18 years+ - NCT07220265Recruiting
PKU carriers: How high phenylalanine affects the brain
This study looks at how carrying one copy of the PKU gene might affect thinking and brain health in adults. It will help researchers understand if mild changes in a substance called phenylalanine can impact memory, focus, and brain scans.
Columbia, MissouriAges 18–60 - NCT07538830Recruiting
Probiotic supplement for muscle strength in older adults
This study tests whether a specific probiotic (a beneficial bacteria called Lactiplantibacillus plantarum) can help improve muscle strength and physical function in adults aged 50–84. The probiotic may work by improving gut health, which could support muscle health.
BusanAges 50–85 - NCT07216742RecruitingPhase 3
Study of a fertility drug for women undergoing IVF with frozen embryo transfer
This trial tests a medication called human menopausal gonadotropin to help women undergoing IVF achieve a live birth. It focuses on the cumulative success rate after freezing and later transferring embryos.
Encino, CaliforniaAges 18–42 - NCT07215689Recruiting
Ashwagandha for healthier skin and hair
This trial tests a daily 300 mg ashwagandha supplement (KSM-66) to see if it improves skin and hair health over three months. It is for generally healthy adults experiencing mild to moderate hair loss.
San Francisco, CaliforniaAges 18–60 - NCT07545720RecruitingPhase 2
Pinoxin to prevent radiation skin damage
This study tests whether a protective agent called Pinoxin can prevent or reduce skin damage from radiation therapy. If you're getting radiation treatment for cancer, this trial may help protect your skin during therapy.
Shanghai, Shanghai MunicipalityAges 18 years+ - NCT07212868RecruitingPhase 1
How glucagon affects blood sugar after weight loss surgery
This study looks at how the hormone glucagon affects blood sugar in people who have had gastric bypass or sleeve gastrectomy surgery more than a year ago, compared to people who have not had any gastrointestinal surgery. It aims to understand glucose metabolism better and may help improve care for people after bariatric surgery.
San Antonio, TexasAges 18–65 - NCT07548424Recruiting
Testing a Peptide Cream on Healthy Skin
This study tests whether a cream containing peptides (small protein fragments) can improve how well your facial skin barrier works. The cream will be tested on one side of your face, compared to the other side, to see if it strengthens and protects your skin.
SplitAges 18–50 - NCT06379971RecruitingPhase 1
Choline for cannabis use in pregnancy
This trial tests whether taking choline (a vitamin-like nutrient) during pregnancy can help protect the baby's brain development in women who use cannabis. It aims to understand if choline supplementation can reduce potential risks linked to cannabis use.
Aurora, ColoradoAges 18–45 - NCT07195552Recruiting
Quick immune effects study for healthy adults
This study tests a product that may quickly affect your immune system. It is for healthy adults who can follow a simple routine and have easy-to-find veins for blood draws.
Klamath Falls, OregonAges 18–75
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Common questions
- Are there clinical trials for placebo - control?
- Yes. Clin2 currently lists 3,955 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.