Clinical trials
Placebo clinical trials
Below are recruiting placebo clinical trials, each written for real people, not researchers. We’re tracking 5,154 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05855369RecruitingPhase 2/Phase 3
Smell training plus brain stimulation for long COVID smell loss
This study tests whether a combination of smell training and a type of nerve stimulation can improve persistent smell problems after COVID. It is meant for people who had normal smell before COVID and still struggle with smell changes months later.
Charleston, South CarolinaAges 18–65 - NCT04166877RecruitingPhase 4
Magnesium drip to reduce pain in ICU trauma patients
This trial tests whether a magnesium infusion can better control pain in adults who have serious injuries and need intensive care. It compares magnesium as part of pain treatment to standard pain care to see if pain improves and stays controlled.
Sacramento, CaliforniaAges 18 years+ - NCT05842174RecruitingPhase 1/Phase 2
Checking a new treatment approach for liver cancer needing TACE
This early-stage trial studies a new strategy for hepatocellular carcinoma (a type of liver cancer) in people who are planned to receive TACE, a procedure that delivers treatment through the liver’s blood supply. It aims to test whether targeting a specific cell survival process can improve how well the treatment works and is tolerated.
Philadelphia, PennsylvaniaAges 18 years+ - NCT05835310RecruitingPhase 3
IV anifrolumab for active lupus in children
This study tests whether an intravenous medicine called anifrolumab can safely improve active systemic lupus (SLE) in children. If you qualify, you may receive the study treatment and be closely monitored for safety and lupus symptoms.
Phoenix, ArizonaAges 5–17 - NCT04566991RecruitingPhase 2
Deferoxamine after aneurysm brain bleed to improve recovery
This trial studies deferoxamine, a medicine that targets iron-related injury, in people with an aneurysmal subarachnoid hemorrhage (a brain bleed caused by a burst aneurysm). It aims to improve neurologic recovery after the aneurysm is treated.
Ann Arbor, MichiganAges 18–80 - NCT05844501RecruitingPhase 4
Ondansetron before heart ablation for atrial fibrillation
This trial tests whether ondansetron can help people with atrial fibrillation (an abnormal heart rhythm) around the time of elective catheter ablation. It may improve the safety or effectiveness of the procedure by targeting a pathway involved in heart rhythm events.
Indianapolis, IndianaAges 18–100 - NCT05841758RecruitingPhase 4
Hydroxychloroquine to reduce steroid use in sarcoidosis
This trial studies whether hydroxychloroquine can control extrapulmonary sarcoidosis (sarcoidosis outside the lungs) using less steroid treatment. It may help people who need systemic therapy for problems such as eyes, skin, bones, joints, nerves, ENT areas, or high calcium levels from sarcoidosis.
AvignonAges 18 years+ - NCT05822141Recruiting
Omega-3 effects on body fat in cold exposure
This study tests whether omega-3 (fish oil–type) changes how your body fat responds when you are exposed to cold. It may help researchers understand how to regulate “brown fat,” which can be involved in how your body uses energy during cold.
Bloomington, IndianaAges 18–40 - NCT05822362RecruitingPhase 2
CBD for People with Early Memory Trouble Risk
This Phase 2 study tests whether CBD (a cannabis-derived product) can improve thinking and memory in people who are at risk for Alzheimer’s disease. You would be followed for about 24 weeks with memory/thinking check-ins and require a study partner to help with certain assessments.
Aurora, ColoradoAges 55–85 - NCT05823532RecruitingPhase 4
Anti-inflammatory treatment test in people with schizophrenia
This Phase 4 study tests how an anti-inflammatory approach affects people with schizophrenia or schizoaffective disorder who also have signs of body inflammation. It may help by targeting inflammation that could be linked to symptoms for some people.
Atlanta, GeorgiaAges 18–55 - NCT05815797RecruitingPhase 2
Chinese herbal formula for mild to moderate psoriasis
This trial tests an herbal formula called Shuiniujiao Dihuang Decoction for people with mild to moderate plaque psoriasis. It may help reduce psoriasis symptoms without using stronger medicines.
Hong KongAges 18–75 - NCT05823727Recruiting
Collagen supplement study before and after knee replacement
This study tests whether taking collagen peptides can improve how knee tissues heal and remodel after total knee arthroplasty (knee replacement). It also looks at functional recovery and wound healing, especially during the physical therapy period in Little Rock.
Little Rock, ArkansasAges 50–75 - NCT05829655RecruitingEarly Phase 1
Measuring drug cravings in people with opioid use disorder
This study tests whether the medication suvorexant can reduce drug cravings in people with opioid use disorder. You will take either suvorexant or a placebo and have your cravings measured in a safe setting.
Baltimore, MarylandAges 18–65 - NCT05835505RecruitingPhase 2
Detox medicine study for primary sclerosing cholangitis
This Phase 2 trial studies a “detoxification” approach to improve liver and bile-duct function in people with primary sclerosing cholangitis (PSC). It may help lower abnormal bile flow markers and see whether the treatment is safe for your liver.
Chestnut Hill, MassachusettsAges 18–75 - NCT05834413Recruiting
Herbs plus chemo and immunotherapy to prevent lung cancer spread
This study looks at whether staged Chinese herbal medicine added to standard treatment can lower the risk of lung cancer coming back or spreading after surgery. It is for people with stage Ib to IIIb non-small cell lung cancer whose tests show no “driver gene” targets.
Shanghai, Shanghai MunicipalityAges 18–74 - NCT05838716RecruitingPhase 3
Vitamin D During Hormone Therapy for Prostate Cancer
This trial studies whether taking vitamin D while you are on prostate hormone therapy (ADT) affects your health outcomes. It may help by keeping vitamin D levels in a safe range during treatment.
Newark, DelawareAges 50 years+ - NCT05837104RecruitingPhase 2
Magnesium and vitamin B6 for early bipolar depression
This Phase 2 trial tests whether magnesium plus vitamin B6 can reduce depressive symptoms in people who are newly diagnosed with bipolar I disorder. It also checks for safety over a short, 4-week treatment period.
Belmont, MassachusettsAges 18–50 - NCT05814055RecruitingPhase 2
Kava to help quit smoking by easing stress and sleep issues
This Phase 2 study tests whether kava can help people quit smoking, especially by reducing stress and improving sleep during tobacco abstinence. You may be offered kava as part of a quitting support plan and monitored for safety and progress.
Gainesville, FloridaAges 21–75 - NCT05843786RecruitingPhase 3
Interferon gamma for ventilator pneumonia in ICU
This trial tests whether a medicine called interferon gamma can improve outcomes in adults with a first episode of pneumonia that develops after being on a ventilator in the ICU. It is designed for specific ICU timing, infection severity, and immune marker levels, and it compares treatment on top of standard care.
LimogesAges 18 years+ - NCT05812755RecruitingPhase 4
Study drug effects on blood vessels and organs in heart surgery
This Phase 4 trial studies vericiguat-like stimulation (a type of medicine that affects blood-vessel signaling) around the time of planned open-heart surgery. It aims to see whether this can change blood-vessel “reactivity” and reduce injury to organs during and after surgery.
Nashville, TennesseeAges 18 years+ - NCT05838274Recruiting
Study of alcohol effects and brain scans in bipolar disorder
This study gives a controlled amount of alcohol and uses brain MRI scans to understand how alcohol affects people with bipolar disorder. It may help researchers find brain and behavior patterns that explain differences in alcohol responses.
Austin, TexasAges 21–26 - NCT05838287RecruitingPhase 4
Pioglitazone for heart failure with preserved pumping in type 2 diabetes
This trial tests whether pioglitazone (a diabetes medicine) helps people who have type 2 diabetes and a specific type of heart failure where the heart pumps normally. It may improve heart failure symptoms and function in carefully selected patients.
San Antonio, TexasAges 30–70 - NCT05844462RecruitingPhase 3
Tadalafil for severe lung blood-pressure problems from COPD
This study tests whether tadalafil can improve outcomes for people with severe pulmonary hypertension caused by COPD (chronic lung disease). It compares how you do with tadalafil versus standard care, focusing on breathing symptoms and how well your heart and lungs cope.
Le Kremlin-Bicêtre, FranceAges 18–85 - NCT05816343RecruitingPhase 2
Orlistat for high triglycerides in people with rare genetic lipid conditions
This Phase 2 trial studies how well and how safely orlistat works over the long term for people who have very high triglycerides linked to rare genetic lipid disorders. It may help lower triglycerides and assess long-term side effects, but you must meet specific genetic, lab, and health requirements.
Dallas, TexasAges 8 years+
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Common questions
- Are there clinical trials for placebo?
- Yes. Clin2 currently lists 5,154 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.