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
- NCT06123715RecruitingPhase 2
Vitamin C to reduce pain after knee replacement
This study tests whether taking vitamin C before and after knee replacement surgery can reduce long-term pain. You may be eligible if you are having knee replacement for osteoarthritis and are generally healthy.
Toronto, OntarioAges 18 years+ - NCT06113016RecruitingPhase 2
Preventing frailty with fisetin and exercise in breast cancer survivors
This study tests whether adding a supplement called fisetin to an exercise program can help prevent frailty in women who have finished chemotherapy for early-stage breast cancer. If you are postmenopausal, have completed chemo within the last year, and can walk a certain distance, you may qualify.
Alhambra, CaliforniaAges Any age - NCT06112990RecruitingPhase 3
Creatine and exercise to keep muscles strong in prostate cancer
This trial tests if taking creatine plus doing resistance exercises at home can help men with prostate cancer maintain muscle mass and slow cancer growth. You would take creatine or a placebo for 52 weeks and do simple strength exercises twice a week.
Salt Lake City, UtahAges 18 years+ - NCT06128252Recruiting
Taurine with chemotherapy and immunotherapy for gastric cancer
This trial tests whether adding taurine to standard chemo-immunotherapy before surgery helps treat locally advanced gastric cancer. It may be an option for patients whose tumors are PD-L1 positive and can be fully removed with surgery.
Wuhan, HubeiAges 18–75 - NCT06118034RecruitingPhase 3
Colchicine for heart surgery recovery
This study tests whether the drug colchicine can reduce inflammation and protect organs during and after planned heart surgery. It may help people recover better.
Nanjing, JiangsuAges 50–80 - NCT06115603RecruitingPhase 2
Testing CBG for ADHD symptoms
This study tests whether a non-psychoactive compound from hemp called CBG (cannabigerol) can help with ADHD symptoms. You will take CBG capsules or a placebo for several weeks to see if it improves focus and reduces hyperactivity.
Fayetteville, ArkansasAges 18–55 - NCT06105775Recruiting
Nitrate supplement for high blood pressure in pregnancy
This trial tests if a nitrate supplement (similar to beetroot) can help control chronic high blood pressure in early pregnancy. It is for women already taking methyldopa and enrolled before 16 weeks.
Ribeirão Preto, São PauloAges 18 years+ - NCT04781972RecruitingPhase 4
Brain scan study of ADHD effects from methylphenidate
This study uses brain imaging (MRI) to see how methylphenidate affects brain activity in people with ADHD. It may help doctors better understand how this medicine works and who benefits most.
Baltimore, MarylandAges 6–40 - NCT05928936RecruitingPhase 2
Exercise study in chronic kidney disease with blood-pressure medicines
This study tests how the body’s blood-pressure control responds to exercise in people with chronic kidney disease (and some transplant recipients), compared with people without kidney disease. It may help researchers learn safer ways to exercise and manage blood pressure for people with kidney disease.
Atlanta, GeorgiaAges 40–75 - NCT06096857RecruitingPhase 2
Cardamom and topical bacteria cream for eczema
This study tests whether taking cardamom by mouth and applying a cream made from a harmless bacteria (Roseomonas) can help treat eczema (atopic dermatitis) in people age 2 and older.
Bethesda, MarylandAges 2–100 - 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+ - NCT06087536RecruitingPhase 2
Trial of OMN6 for hospital-acquired Acinetobacter pneumonia
This trial tests a new antibiotic called OMN6 for people with a serious lung infection (pneumonia) caught in the hospital or from a breathing machine, caused by a hard-to-treat bacteria (Acinetobacter). The goal is to see if OMN6 is safe and how the body processes it.
AthensAges 18–99 - NCT06101745RecruitingPhase 2/Phase 3
Trial to see ureters during abdominal or pelvic surgery
This trial tests a dye called Nizaracianine Triflutate that helps surgeons see the ureters (tubes from kidneys to bladder) during surgery. It aims to make surgery safer by reducing the risk of accidentally injuring the ureters.
Los Angeles, CaliforniaAges 18 years+ - NCT06096116RecruitingPhase 3
Trial of a blood product for heparin resistance during heart surgery
This study tests a blood-derived medicine (antithrombin) to help people who do not respond well to the blood thinner heparin during heart surgery. It aims to make surgery safer by improving blood thinning.
Stanford, CaliforniaAges 18–85 - NCT06102044RecruitingPhase 3
Zinc for young infants with severe infection in Tanzania
This study tests whether giving zinc supplements to very young babies (under 2 months) with severe infections helps them recover better. It takes place in Tanzania and involves adding zinc to their regular care.
Dar es SalaamAges birth–2 months - NCT06084364RecruitingPhase 4
Steroid vs saline injection vs occupational therapy for thumb arthritis
This study compares a steroid injection (Kenacort), a saltwater (saline) injection, and occupational therapy to see which works best for thumb base osteoarthritis pain. It may help you if you have thumb pain with swelling and want to avoid surgery.
BodøAges 40–85 - NCT06083480RecruitingPhase 4
Reducing stress to prevent long-term pain after knee replacement
This trial tests if lowering oxidative stress (damage from natural body processes) during knee replacement surgery can prevent chronic pain afterward. It may help people with osteoarthritis who have moderate to severe pain before surgery.
Nashville, TennesseeAges 50 years+ - NCT06090227RecruitingPhase 1/Phase 2
Metformin for FSGS: A phase 1/2 trial
This trial tests whether the diabetes drug metformin can help people with a kidney disease called FSGS, by activating a cell-protecting pathway. Participants will take metformin or a placebo along with their usual steroid treatment.
New Haven, ConnecticutAges 18–80 - NCT06093477Recruiting
Melatonin and recovery for teens after surgery
This study tests whether taking melatonin (a natural sleep hormone) after a major bone or joint surgery helps teens recover better. If you are 12-18 and having a surgery like scoliosis repair, you may be able to join.
Palo Alto, CaliforniaAges 12–18 - NCT06096597RecruitingPhase 2/Phase 3
Amniotic Membrane Therapy for Bladder Pain
This trial tests a treatment made from amniotic membrane (a natural tissue) to help reduce pain and discomfort in people with Interstitial Cystitis (also called Painful Bladder Syndrome). It is for women who have tried at least one other treatment without success.
Clevleand, OhioAges 18 years+ - NCT05918211RecruitingPhase 3
Udenafil test during exercise for teens with Fontan circulation
This trial tests whether udenafil helps teens and young people with Fontan circulation do better on exercise and breathing-related measures over time. You’d need to be on blood-thinning medicine, and be able to complete exercise testing safely.
Phoenix, ArizonaAges 12–18 - 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 - NCT04724252RecruitingPhase 2/Phase 3
Gabapentin to help children use less opioid after surgery
This study tests whether gabapentin can reduce how much opioid pain medicine children need after certain major chest or heart surgeries. If it works, it may lower opioid-related side effects while still helping with postoperative pain.
Sacramento, CaliforniaAges Up to 17 years - NCT05178069RecruitingPhase 2
Probiotic supplement study for alcohol use disorder and liver injury
This Phase 2 trial studies whether a probiotic (LGG) can improve health in people with alcohol use disorder and alcohol-related liver injury. It’s not an alcohol treatment study, so participants are mainly joining to see how the supplement affects the body and liver-related outcomes.
Louisville, KentuckyAges 21–65
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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.