Clinical trials
Placebo clinical trials
Below are recruiting placebo clinical trials, each written for real people, not researchers. We’re tracking 5,245 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04872660RecruitingPhase 4
Gushen Antai pill to improve IVF ongoing pregnancy rates
This trial studies whether a traditional Chinese medicine pill (Gushen Antai) can improve the chance of an IVF pregnancy that continues (“ongoing pregnancy rate”) and assess its safety. It’s for people starting their first IVF/ICSI cycle with normal ovarian function reserve.
Jinan, ShandongAges 21–42 - NCT04874038RecruitingPhase 3
Lidocaine infusions to prevent long-lasting pain after breast surgery
This Phase 3 study tests whether receiving lidocaine through an IV during breast surgery can lower the chance of ongoing pain afterward. If it works, it may help some people avoid chronic, surgery-related pain in the chest wall, shoulder, or arm.
Calgary, AlbertaAges 18–100 - NCT04873011RecruitingPhase 1
Quinine in overweight women to change hunger and gut hormones
This early study tests whether quinine affects hunger and digestion-related gut hormones in women who are mildly overweight. It may help researchers understand how the body controls appetite, but it is mainly to check effects and safety.
Leuven, Vlaams-BrabantAges 18–65 - NCT04873050RecruitingPhase 4
Medication and lifestyle plan to bring blood sugar to normal
This Phase 4 study looks at how to help women with a recent history of gestational diabetes get their blood sugar back toward normal levels. It likely includes blood-sugar testing and a controlled diet period to see what works best.
Baton Rouge, LouisianaAges 18–45 - NCT04874012RecruitingPhase 2
Taurine supplement study for blood sugar, fats, and inflammation
This Phase 2 study tests whether taking taurine affects blood sugar control, cholesterol/fats, and inflammation in people with type 2 diabetes. It may help by improving these lab markers, which are linked to long-term health risks.
Porto Alegre, Rio Grande do SulAges 30–80 - NCT04877093RecruitingPhase 3
Low-dose clonidine for PTSD nightmares in veterans
This Phase 3 study tests whether low-dose clonidine can reduce PTSD symptoms and especially nightmares in U.S. veterans. You’d be screened for PTSD severity and current treatments, then asked to visit the clinic as scheduled to see if the treatment helps.
Wauwatosa, WisconsinAges 18 years+ - NCT04880707RecruitingPhase 2
Pain medication options for lower wisdom tooth removal
This study compares pain-medication approaches during and after removing at least one lower impacted wisdom tooth (a tooth that’s stuck). It may help find a safer or more effective way to control dental pain after surgery.
Newark, New JerseyAges 18 years+ - NCT04883255RecruitingEarly Phase 1
Study cannabis effects on brain function in adults with HIV
This early-phase study looks at how cannabis (and the body’s cannabinoid system) may affect thinking and brain-related measures in people with HIV. You may be asked to avoid cannabis and complete several brain and health assessments to see how these factors relate.
San Diego, CaliforniaAges 18–65 - NCT04886284RecruitingPhase 2
Cefazolin plus ertapenem for MSSA bloodstream infection
This Phase 2 study tests whether adding ertapenem to cefazolin can improve treatment of staphylococcus (“S. aureus”) bloodstream infection that is likely methicillin-susceptible (MSSA). It aims to start the right antibiotics quickly, before MRSA status is fully confirmed, using early testing and a treatment plan guided by infectious-disease specialists.
Calgary, AlbertaAges 18–100 - NCT04891237RecruitingPhase 3
Grass and olive allergy vaccine trial for teens to older adults
This Phase 3 trial tests whether an allergy treatment can reduce symptoms caused by grass and olive pollen. It also checks safety, especially for breathing and allergic reactions, in people with confirmed grass/olive allergy.
Tarancón, CuencaAges 12–65 - NCT04898283RecruitingPhase 3
Allergy shot study for grass and cypress pollen symptoms
This phase 3 trial tests a specific allergy treatment (an “immunotherapy” shot) for people whose symptoms are triggered by grass and cypress tree pollen. It aims to see if the treatment is safer and more effective at reducing allergy symptoms over time, especially for nose/eye symptoms and some people with asthma.
Valladolid, Castille and LeónAges 12–65 - NCT04899908RecruitingPhase 2
Brain radiation with or without gadolinium nanoparticles for brain metastases
This trial tests whether adding tiny gadolinium-containing nanoparticles to standard brain radiation can better control brain metastases from certain cancers. It is for people with tumors that have grown after immunotherapy, are from certain cancers (like melanoma, GI, or HER2+ breast), are cystic, are large, or have come back after prior radiation.
Boston, MassachusettsAges 18 years+ - NCT04902703RecruitingPhase 2
GM-CSF drug trial for mild to moderate Alzheimer’s disease
This Phase 2 study tests whether sargramostim (a GM-CSF related medicine) is safe and can slow or improve Alzheimer’s symptoms. You might be a good fit if you have mild or moderate Alzheimer’s, positive amyloid testing, and can complete frequent visits with a close caregiver who knows you well.
Aurora, ColoradoAges 60–85 - NCT04908644Recruiting
Oral MS-20 for moderate to severe ulcerative colitis
This trial studies whether an oral treatment called MS-20 can improve ulcerative colitis (UC) in adults with moderate to severe disease. You may be asked to provide stool samples from home and avoid certain foods and medicines before screening and during the study.
TaipeiAges 20–65 - NCT04912518Recruiting
Dexmedetomidine for heart protection after a specific heart attack
This study tests whether dexmedetomidine can protect the heart in people who are having a specific type of heart attack (anterior STEMI) when treated within 6 hours of symptom start. You may be considered if your diagnosis and vital signs fit the study safety rules, and if you can take part in follow-up.
Hefei, AnhuiAges 18–75 - NCT04913870RecruitingPhase 4
Tested blood pressure pills for mild to moderate aortic narrowing
This study tests whether angiotensin receptor blocker (ARB) blood pressure medication helps people with mild to moderate aortic stenosis (a narrowing of the heart’s main valve). It looks at safety and whether the treatment offers benefit for your heart and blood flow.
Québec, QuebecAges 20–99 - NCT04915183RecruitingPhase 2
Atorvastatin to help prevent cisplatin-related hearing loss
This Phase 2 trial tests whether a cholesterol medicine called atorvastatin can protect hearing in people with head and neck cancer receiving cisplatin plus radiation. If it works, it may reduce the chance or severity of treatment-related hearing damage.
Atlanta, GeorgiaAges 18–100 - NCT04917471Recruiting
Testing nitrate to improve red blood cell function in type 2 diabetes
This study looks at whether taking nitrate can improve how red blood cells work in people with type 2 diabetes. You may be asked to follow a specific plan and avoid certain foods or medicines that could affect the results.
StockholmAges 18 years+ - NCT04917302RecruitingPhase 2
NMDA and anti-inflammatory add-on for treatment-resistant schizophrenia
This trial tests whether combining an NMDA “signal-supporting” treatment with an anti-inflammatory medicine can reduce symptoms in people with schizophrenia who don’t respond well to usual antipsychotic drugs. If you’ve tried at least two antipsychotics and you’re still symptomatic, this study may be worth screening for.
TaichungAges 18–65 - NCT04920149RecruitingPhase 2
Mesalamine to help prevent colon cancer in Lynch syndrome
This trial tests whether mesalamine, a medicine used for bowel inflammation, can help prevent colorectal cancer in people with Lynch syndrome who do not currently have cancer. It may help by lowering the chance that new pre-cancer growths form over time.
AalborgAges 30 years+ - NCT04921527RecruitingPhase 3
Chiauranib with weekly paclitaxel for tough ovarian cancer
This Phase 3 trial tests whether chiauranib combined with weekly paclitaxel can shrink recurrent ovarian, fallopian tube, or primary peritoneal cancer that did not respond to platinum chemotherapy. It is designed for people who have limited treatment options after platinum-resistant or platinum-refractory disease.
Shanghai, ChinaAges 18–70 - NCT04922333RecruitingPhase 3
Bisphosphonate to prevent bone loss after sleeve weight-loss surgery
This study looks at whether a bisphosphonate medicine can reduce bone loss after sleeve gastrectomy (a type of weight-loss surgery). If you had the surgery, it may help protect your bones while you recover and lose weight.
Winston-Salem, North CarolinaAges 30 years+ - NCT04924270RecruitingPhase 2
Capsule stool transfer for newly diagnosed inflammatory bowel or joint disease
This Phase 2 study tests whether taking capsule stool (FMT) is safe and can help people who are newly diagnosed and haven’t started the usual medicines yet. Participants will also start the standard first-line treatment for their condition, and the study will compare safety and outcomes.
OdenseAges 18–75 - NCT04924868RecruitingPhase 3
Ursodeoxycholic acid to prevent gallstone pancreatitis returning
This trial tests whether ursodeoxycholic acid (a bile medicine) can help prevent complications from gallstone-related acute pancreatitis from coming back after you leave the hospital. It may help reduce repeat problems linked to gallstones, especially after an initial pancreatitis episode.
Santiago de Compostela, A coruñaAges 18 years+
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Common questions
- Are there clinical trials for placebo?
- Yes. Clin2 currently lists 5,245 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.