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
- NCT04513288Recruiting
Immunonutrition with L-citrulline for ICU sepsis patients
This trial tests whether adding L-citrulline to tube feeding (enteral nutrition) can improve outcomes for people in the ICU with sepsis or septic shock. It may help support the body’s immune response while you’re critically ill.
Rennes, Brittany RegionAges 18 years+ - NCT04516057RecruitingPhase 3
Tested medicine nabilone for agitation in Alzheimer’s dementia
This Phase 3 trial studies whether nabilone can reduce agitation (restlessness, anger, or difficult behavior) in people with Alzheimer’s dementia. It’s designed for older adults who already have agitation despite standard dementia care.
Calgary, AlbertaAges 55 years+ - NCT04520178RecruitingPhase 2/Phase 3
5HTP trial for long-term spinal cord injury
This trial tests whether 5HTP can help people with spinal cord injury caused by trauma at least 6 months ago. It is mainly designed to see if the treatment is safe and helpful over the study period.
Louisville, KentuckyAges 18–65 - NCT04528082RecruitingPhase 3
Apremilast for children with frequent mouth ulcers from Behçet’s disease
This study tests apremilast to help reduce active, recurring mouth (oral) ulcers in children with Behçet’s disease. It may help if your child has had repeated mouth ulcers despite at least one non-biologic treatment.
BronAges 2–17 - NCT04547439RecruitingPhase 2
Melatonin for diabetic eye disease and better sleep
This Phase 2 study tests whether melatonin can improve sleep and possibly outcomes related to diabetic retinopathy (damage to the retina from diabetes). It also checks whether it affects related symptoms while keeping people safe.
Chicago, IllinoisAges 40–65 - NCT04550377RecruitingPhase 2
Cannabidiol for PTSD, including PTSD after mild head injury
This Phase 2 study tests whether cannabidiol (CBD) can reduce PTSD symptoms, including in people who also had a mild traumatic brain injury (TBI). It’s meant to see if CBD is helpful and safe for PTSD symptoms over the study period.
New York, New YorkAges 18–70 - NCT04551482RecruitingPhase 2
Oxytocin to help teens lose weight
This study tests whether the hormone oxytocin can help adolescents with obesity lose weight. You may be asked to stay on your usual diet and routines during the 18-week study to see how well the treatment works.
Boston, MassachusettsAges 10–18 - NCT04565925RecruitingPhase 2
Sildenafil to reduce urine leaks after spinal cord injury
This trial studies whether sildenafil (a prescription pill) can lessen urinary incontinence in adults with spinal cord injuries. If it works, it may reduce the number of urine leakage episodes each week.
College Station, TexasAges 18–70 - 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 - NCT04570085RecruitingPhase 3
Caffeine treatment to improve thinking in Alzheimer’s disease
This trial tests whether changing caffeine intake can improve thinking and brain function in people with Alzheimer’s disease. You may qualify if you can follow a low-caffeine diet and have stable Alzheimer’s treatment and sleep/heart conditions.
AmiensAges 50 years+ - NCT04572256RecruitingEarly Phase 1
Montelukast after ACL surgery to protect knee cartilage
This early trial tests whether montelukast, a tablet used for allergies, can help protect knee cartilage after ACL surgery. It is specifically for people who have a meniscus injury along with their ACL tear.
Lexington, KentuckyAges 25–50 - NCT04576078RecruitingPhase 2
Nefopam for less pain after knee replacement surgery
This Phase 2 study tests whether oral nefopam can reduce pain after total knee replacement done with spinal anesthesia. It looks at whether this medicine works better than the usual post-surgery pain plan and how safely it can be used.
Lyon, LyonAges 18–75 - NCT04573673Recruiting
Tapping the shin nerve to help bladder control in MS
This study tests a noninvasive nerve stimulation applied to the lower leg to improve bladder emptying problems in people with multiple sclerosis. It may help reduce bladder dysfunction while you keep using clean intermittent self-catheterization.
LilleAges 18–65 - NCT04588285RecruitingPhase 2
Ambroxol for new and early dementia with Lewy bodies
This trial tests whether ambroxol (a mouth medicine) can help people with new or early dementia with Lewy bodies (DLB) or mild cognitive impairment linked to DLB. Participants take the medicine for about 18 months while the study tracks safety and changes over time.
Haugesund, HaugesundAges 50–85 - NCT04591639Recruiting
DAPA test for diabetes and heart failure using body scans
This study tests how a medication called DAPA (an SGLT2 inhibitor) affects the body in people with heart failure (with or without type 2 diabetes), or in some people with type 2 diabetes only. It may help researchers understand who could benefit most and what changes happen in the heart, using specialized heart imaging.
Edinburgh, ScotlandAges 18 years+ - NCT04594018RecruitingPhase 3
Test a hair lotion for male pattern hair loss
This Phase 3 study tests whether a specific hair lotion works and is safe for men with male pattern hair loss. It also checks that results are consistent while you keep similar hair care and avoid certain other hair-loss treatments.
Osasco, São PauloAges 18–60 - NCT04601116RecruitingPhase 3
Atorvastatin for hormone-positive breast cancer to prevent recurrence
This Phase 3 study tests whether taking atorvastatin (a cholesterol-lowering medicine) can improve outcomes for women with estrogen-receptor–positive breast cancer. It may help by affecting cancer-related pathways and reducing risk of recurrence or progression.
AarhusAges 18 years+ - NCT04616781RecruitingPhase 2/Phase 3
Ketone drink study for alcohol use disorder brain function
This study tests whether a ketone-based treatment (a ketone ester) can change brain activity in people with alcohol use disorder who are not currently seeking treatment. You may also have brain scans, so the study is looking for safe MRI eligibility and certain health factors.
Philadelphia, PennsylvaniaAges 21–65 - NCT04628026RecruitingPhase 3
Venetoclax plus chemotherapy for new AML or high-risk MDS
This trial tests adding venetoclax to standard chemotherapy to help people with newly diagnosed acute myeloid leukemia (AML) or high-risk MDS (MDS-EB-2) live longer and reduce cancer activity. You may benefit if you’re eligible for intensive chemotherapy and meet specific blood, organ, and treatment timing requirements.
InnsbruckAges 18–75 - NCT04631471RecruitingPhase 3
Ibudilast for spinal cord pressure from neck wear
This Phase 3 study tests ibudilast, a medicine, to see if it can improve symptoms in people whose neck arthritis has started compressing the spinal cord. You would still have your usual surgery to relieve the pressure, and then take the study medicine to see if recovery and function improve.
CambridgeAges 18–80 - NCT04637438Recruiting
Fecal transplant for Crohn’s around the small and large bowel
This trial studies fecal microbiota transplantation (a transplant of beneficial gut bacteria from a donor) to help people with Crohn’s disease that is causing narrowing (strictures) and/or abnormal tunnels (fistulas) and who need bowel surgery. You may qualify if you’re an adult, planning ileal/ileocecal surgery, and can complete the colonoscopy while not on certain gut-altering medicines.
TampereAges 18–120 - NCT04637620RecruitingPhase 2
NMDA-based treatment study for major depression
This Phase 2 trial tests whether an NMDA-targeted treatment can improve symptoms of major depressive disorder (MDD). You may be able to join if your depression diagnosis and symptom score fit, and you meet several safety and study-following requirements.
TaichungAges 18–55 - NCT04643327RecruitingPhase 2
Levetiracetam study to lower dementia risk in Parkinson’s
This Phase 2 study tests whether an added medication strategy can change brain targets linked to memory decline in people with Parkinson’s disease, including those with no memory problems or mild memory changes. It may help lower risk of developing dementia, but you must be able to safely do MRI scans and meet other health and medication rules.
Brisbane, QueenslandAges Any age - NCT04646707Recruiting
Nerve block to reduce opioid use after neck spine surgery
This trial tests whether a targeted back/neck numbing injection (an erector spinae block) can help reduce the amount of opioid pain medicine needed after posterior cervical spine surgery. It also aims to support an “enhanced recovery” pathway so patients may recover more comfortably and potentially faster.
Toronto, OntarioAges 18–80
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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.