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
- NCT04319627RecruitingPhase 3
Statins to prevent new blood clots after leg clot or lung clot
This trial tests whether taking a statin (rosuvastatin) after a recent leg blood clot (DVT) and/or lung blood clot (PE) can lower the chance of future venous clots. You might benefit if you’re at risk for more clotting and can take the study medication safely.
Calgary, AlbertaAges 18 years+ - NCT04308278RecruitingPhase 4
Homeopathic treatment for Epstein-Barr virus fatigue
This study tests a homeopathic treatment (2LEBV® and 2LXFS®) for people with Epstein-Barr virus infection who experience long-lasting fatigue and other symptoms. It aims to see if this treatment helps reduce fatigue and improve overall well-being.
Heule, KortrijkAges 12 years+ - NCT04326426Enrolling by invitationPhase 3
Study of tradipitant for severe or critical COVID-19
This trial tests whether tradipitant can improve outcomes for adults with severe or critical COVID-19, including pneumonia and low oxygen. It may help patients whose lungs are significantly affected and who need careful hospital-level care.
New York, New YorkAges 18–90 - NCT04356326RecruitingPhase 3
Aspirin to prevent complications in pregnancy with chronic high blood pressure
This trial studies whether taking acetyl salicylic acid (aspirin) during pregnancy can reduce problems caused by chronic high blood pressure. It focuses on pregnant people already known to have high blood pressure before or early in pregnancy.
BordeauxAges 18 years+ - NCT04356287RecruitingPhase 1/Phase 2
Cord cell treatment for severe systemic sclerosis symptoms
This early-phase study tests whether umbilical cord-derived “cord blood–type” cells can reduce or improve severe systemic sclerosis (a type of hardening/scarring disease of connective tissue). It may help people whose current standard treatments haven’t worked or caused side effects.
Montreal, QuebecAges 18 years+ - NCT04355572Recruiting
Vitamin D replacement study for teens at risk of PCOS
This study looks at how taking vitamin D affects hormone levels and emotional well-being in teen girls who may develop PCOS. If you have low vitamin D and meet PCOS risk criteria, the study may test whether vitamin D helps you feel and function better.
New Haven, ConnecticutAges 13–21 - NCT04373473RecruitingPhase 2
Oral stool treatment to prevent ulcerative colitis flare-ups
This study tests whether taking freeze-dried (lyophilized) donor stool material by mouth can help prevent ulcerative colitis from coming back or causing intestinal inflammation. Participants are in remission and stay on their usual treatment while receiving the study product.
Houston, TexasAges 18 years+ - NCT04262206RecruitingPhase 4
Testing how statins affect outcomes in adults 75 and older
This trial studies whether cholesterol-lowering medicine (a statin, specifically atorvastatin) improves health and benefits in people age 75 and older in everyday life. It may help doctors understand which older adults benefit most and how to use these medicines safely.
Birmingham, AlabamaAges 75 years+ - NCT04362826Recruiting
Probiotic supplement study for breast cancer patients
This study tests whether taking a probiotic supplement affects the bacteria and fungi in your gut, which may be linked to your breast cancer. You'll take a daily probiotic and have your diet and activity stay the same, to see if it helps your body respond to treatment.
Cleveland, OhioAges 18–65 - NCT04325958Recruiting
Test how cannabis affects driving in different age groups
This study looks at how smoked cannabis changes driving performance when compared across two age groups. It may help researchers understand safety risks and differences by age.
Toronto, OntarioAges 19–45 - NCT04263038RecruitingPhase 4
Watchful waiting versus blood thinners for small lung clots
This trial compares close monitoring (“watch and wait”) versus taking the blood thinner rivaroxaban in people with a small type of lung blood clot. It aims to find out whether low-risk patients can safely avoid or reduce anticoagulation while still staying healthy.
Woluwe-Saint-Lambert, Brussels CapitalAges 18 years+ - NCT04172532RecruitingPhase 1/Phase 2
New targeted drug with radiation for locally advanced pancreatic cancer
This Phase 1/2 trial tests adding peposertib, a targeted anti-cancer drug, to standard radiation for people with locally advanced pancreatic adenocarcinoma. It aims to improve control of the cancer after initial chemotherapy and determine whether the combo is safe and effective.
Duarte, CaliforniaAges 18 years+ - NCT04211259RecruitingEarly Phase 1
Loratadine to reduce bone pain during stem cell collection
This early trial studies whether loratadine (an allergy medicine) can reduce bone pain caused by G-CSF, which is used to help your body collect stem cells. If you have multiple myeloma and are preparing for stem cell mobilization, this may make treatment-related bone pain more tolerable.
New Brunswick, New JerseyAges 18 years+ - NCT04160910RecruitingPhase 2
Studying 5HTP to manage asthma symptoms in kids
This Phase 2 study tests whether 5HTP can help regulate asthma in children and teens who have mild to moderate asthma linked to allergies. It may be an option if your symptoms are allergy-related and you can follow study visits and questionnaires.
Indianapolis, IndianaAges 8–18 - NCT04250259RecruitingPhase 2
SAMe treatment study for alcoholic cirrhosis
This Phase 2 study tests whether SAMe can help people with alcoholic cirrhosis (scarred liver) who are in early to mid stages. It may also include healthy volunteers to compare safety and blood/body measurements.
Los Angeles, CaliforniaAges 18–70 - NCT04165486RecruitingPhase 1
Test drug safety in adults with multiple system atrophy
This Phase 1 study checks how safe a drug called ION464 is, how the body handles it, and how much of the drug reaches the bloodstream in adults with multiple system atrophy (MSA). It may help researchers find a dosing approach for future treatments for MSA.
InnsbruckAges 40–70 - 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 - NCT04145258RecruitingPhase 3
Stronger TB treatment for meningitis to reduce deaths
This trial tests if giving a stronger combination of TB drugs for meningitis can save more lives. It's for patients who have been diagnosed with tuberculosis meningitis and have not yet started more than 5 days of TB treatment.
AbidjanAges 15 years+ - NCT04105270RecruitingPhase 2
Durvalumab plus chemo with RMT for lung cancer
This Phase 2 trial studies a new treatment plan that combines RMT with durvalumab and chemotherapy in people with untreated advanced lung adenocarcinoma. It aims to improve outcomes by helping the immune system and fighting cancer cells together.
Phoenix, ArizonaAges 18 years+ - 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+ - NCT04036188RecruitingEarly Phase 1
Vitamin D and triamcinolone for plaque psoriasis
This early study tests whether taking vitamin D together with triamcinolone (a steroid used on skin) works better for plaque psoriasis than a standard approach. It aims to see if the combination helps clear psoriasis plaques and is safe.
Fairborn, OhioAges 18 years+ - NCT04049331RecruitingPhase 2
Testosterone therapy for cancer survivors with fatigue
This trial tests whether testosterone replacement can help male cancer survivors who have ongoing fatigue and low testosterone levels. It is for men who have completed chemotherapy or radiation and are cancer-free for at least a year.
Boston, MassachusettsAges 18–54 - NCT04031456RecruitingPhase 2/Phase 3
PRP treatment to help ovaries work again in early ovarian failure
This trial studies whether an injection of your own PRP (platelet-rich plasma) can improve how your ovaries work in people with early ovarian failure. If it helps, it may lead to better hormone balance and return of more regular ovulation and periods.
AthensAges 25–39 - NCT04060030RecruitingPhase 2
Leucovorin for young children with autism language difficulties
This Phase 2 study tests whether leucovorin (a vitamin-related medicine) can improve social communication and language in young children with autism. It also looks at safety and whether the results hold while the child stays on their usual therapies and routines.
Phoenix, ArizonaAges 2.5 years–5 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.