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
- NCT05591027RecruitingPhase 1
Testing Centella asiatica for memory problems in older adults
This Phase 1 study tests whether Centella asiatica (a plant-based supplement) is safe and reaches its intended target in people with mild cognitive impairment or early Alzheimer’s disease. It also checks how it affects memory-related brain measures like MRI scans, which is why multiple scans are required.
Portland, OregonAges 60–85 - NCT05592886Recruiting
Oral probiotic-and-prebiotic drink to prevent colon polyps returning
This study tests whether an oral synbiotic (a probiotic plus a prebiotic) can reduce the chance that advanced colon growths come back after they were removed. It also looks at changes in stool-related bacterial “gene markers” that may signal lower risk over time.
Hohhot, Inner MongoliaAges 18–90 - NCT05593549RecruitingEarly Phase 1
Studying blood vessel damage in type 2 diabetes
This early study looks at how “autophagy” (your body’s cell recycling process) relates to small blood-vessel problems in people with type 2 diabetes. It may help researchers understand mechanisms and possible future treatments, mainly for people who meet specific health and medication criteria.
Milwaukee, WisconsinAges 18–80 - NCT05594017RecruitingEarly Phase 1
Test medicine to change brain rhythms and study memory
This early research study tests whether a medicine can change the brain’s electrical “rhythms” while people do memory-related tasks. It may help researchers understand how brain timing affects memory in people who are already being evaluated with specialized brain electrode monitoring.
Dallas, TexasAges 18–55 - NCT05595434Recruiting
Studying stress and reality tracking in young adults
This study looks at how people track what’s real and how stress affects thinking and behavior. It may help researchers understand stress-related changes, using tasks involving listening and reading.
BronAges 18–30 - NCT05604638RecruitingPhase 3
Tirofiban soon after tenecteplase for acute stroke flare
This trial tests whether starting tirofiban soon after tenecteplase can improve outcomes for people whose stroke symptoms temporarily get worse after treatment. It aims to see if the added medicine can reduce harmful clot-related changes after initial thrombolysis.
Chuzhou, AnhuiAges 18 years+ - NCT05605704RecruitingPhase 2/Phase 3
Olive leaf extract for controlling diabetes
This trial studies whether olive leaf extract can help control diabetes. If you’re an adult with diabetes, you may be eligible to join and see how this supplement affects your blood sugar.
Monastir, Monastir TunisiaAges 18–100 - NCT05606341RecruitingPhase 1
Testing a diabetes-style shot to boost brain immunity in early Alzheimer’s
This Phase 1 study tests whether stimulating the immune system (through a receptor called TLR9) is safe and may affect brain changes in people with early Alzheimer’s. It mainly enrolls older adults with memory impairment confirmed by specific amyloid imaging.
New York, New YorkAges 60–85 - NCT05612594RecruitingPhase 4
Study of an SGLT2 pill for sleep apnea in overweight adults
This study tests whether taking an SGLT2 inhibitor pill (bexagliflozin) can improve obstructive sleep apnea and related body measurements. It focuses on people who are overweight or obese and have confirmed obstructive sleep apnea.
New Haven, ConnecticutAges 18 years+ - NCT05613608RecruitingPhase 2/Phase 3
Cannabidiol (CBD) study for alcohol use disorder
This trial tests whether cannabidiol (CBD) can help people cut down or quit drinking alcohol. It enrolls adults diagnosed with alcohol use disorder and wanting to reduce drinking, while checking for safety and other mental health or drug use factors.
Aurora, ColoradoAges 21 years+ - NCT05615779Recruiting
Personalized fiber (B-fructan) diet for inflammatory bowel disease
This trial tests whether a tailored diet high in B-fructans can improve inflammatory bowel disease (ulcerative colitis or IBD-unclassified) in people in mild-to-moderate remission. It may help your gut and reduce bowel inflammation, and it involves colonoscopy and sample collection.
Edmonton, AlbertaAges 6–39 - NCT05617027Recruiting
tDCS for long-term muscle and joint pain in older adults
This study tests whether a non-invasive brain stimulation treatment (tDCS) can reduce chronic muscle and joint pain in people age 65+. If you have pain for at least 6 months, this trial may help by targeting the brain signals involved in pain.
Montreal, QuebecAges 65 years+ - NCT05618353RecruitingPhase 4
Colchicine before surgery to lower heart and inflammation complications
This trial tests whether taking colchicine around the time of surgery can reduce bad events after surgery in people at higher heart risk. It focuses on helping prevent complications related to inflammation after an operation.
Birmingham, AlabamaAges 18 years+ - NCT05623007Recruiting
Diet and gut bacteria study for vaccinated teens with COVID
This trial tests whether changing diet can shift gut bacteria in overweight or obese teens after COVID-19 vaccination. The goal is to see if dietary changes can affect health markers related to the gut and immune system.
Jakarta Pusat, DKI JakartaAges 12–17 - 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+ - NCT05624125Recruiting
Beetroot juice study for circulation problems in leg arteries
This trial tests whether drinking beetroot juice can improve how well people with peripheral artery disease (PAD) can function and walk. It’s looking at circulation-related measurements in the legs and how you do on walking tests.
Chicago, IllinoisAges 50 years+ - NCT05624138RecruitingPhase 3
Ketotifen to help prevent nerve damage from oxaliplatin
This trial tests whether ketotifen can protect against nerve damage (called peripheral neuropathy) caused by oxaliplatin, a common chemotherapy used for stage III colon cancer. If it works, it may help reduce tingling, numbness, or burning pain in the hands and feet.
Tanta, OtherAges 18 years+ - NCT05625425Recruiting
Study testing a memory and wayfinding training program
This study tests a wayfinding (getting around) training program and how it may affect long-term memory. You may need brain scans (fMRI), virtual reality tasks, and regular short walks to participate.
San Francisco, CaliforniaAges 60–85 - NCT05625633RecruitingPhase 2/Phase 3
HPV vaccine vs placebo for stubborn skin warts
This study tests whether an HPV vaccine can help shrink or clear cutaneous (skin) warts that have not responded to prior treatments. Participants get the study vaccine or a placebo to compare results and safety.
Salt Lake City, UtahAges 18 years+ - NCT05625724RecruitingPhase 3
Aspirin to help prevent pregnancy complications after IVF
This Phase 3 study tests whether daily low-dose aspirin can reduce the risk of preeclampsia (dangerous high blood pressure in pregnancy) and improve pregnancy outcomes for people who got pregnant using assisted reproduction like IVF. It mainly targets pregnancies early on (about 9–14 weeks).
AngersAges 18 years+ - NCT05629325RecruitingPhase 4
Buspirone for weak or missing esophagus contractions
This study tests whether buspirone helps people whose esophagus does not squeeze properly (or doesn’t squeeze at all), causing swallowing problems. You would be assigned to buspirone or a placebo and monitored to see if symptoms improve.
Leuven, Vlaams-BrabantAges 18 years+ - NCT05629702RecruitingPhase 2
Temozolomide with or without cannabinoids for recurrent brain tumor
This trial tests whether adding cannabinoid medicine to temozolomide helps people whose glioblastoma (GBM) has returned. It compares temozolomide plus cannabinoids versus temozolomide alone, using blinded treatment so neither you nor the team knows which option you get.
Bodelwyddan, DenbighshireAges 16 years+ - NCT05631405Recruiting
Dexamethasone for serious dengue with warning signs
This trial studies whether dexamethasone (a steroid medicine) can help people with dengue infection who have warning signs and are still in the fever stage. It may help reduce complications like breathing problems, severe bleeding, or organ stress, but it is only for a specific window and situation.
BangkokAges 7–99 - NCT05635227Recruiting
Medications during heart surgery to help control breathing and circulation
This study looks at whether giving dexamethasone and olanzapine during certain heart surgeries can improve how blood flow and ventilation (breathing support) are managed. It’s meant to see if these medicines help the body handle heart-lung bypass more safely.
CopenhagenAges 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.