Clinical trials
Adult clinical trials
Below are recruiting adult clinical trials, each written for real people, not researchers. We’re tracking 3,743 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06793839Recruiting
3D ultrasound imaging after brain bleed
This trial tests a new 3D ultrasound technique to see if it can better visualize blood flow in the brain after a subarachnoid hemorrhage (bleeding around the brain). It may help doctors monitor and treat patients more effectively.
CaenAges 18 years+ - NCT06794255Recruiting
Vitamin C for healthy aging in middle-aged adults
This study looks at whether vitamin C can help support healthy aging in middle-aged and older adults. It will compare taking vitamin C to a placebo (a dummy pill) to see if it improves overall health.
Nanchang, JiangxiAges 18–70 - NCT06795386Recruiting
Widespread pain after rapid weight loss in Black and Hispanic adults
This study looks at whether rapid weight loss from bariatric surgery leads to long-term widespread pain in Black and Hispanic adults. The goal is to understand how weight loss affects pain and find better ways to help people manage it.
New York, New YorkAges 18–75 - NCT06796374Recruiting
Comparing fisetin in young and older adults
This trial compares how the body processes fisetin, a natural substance found in fruits and vegetables, in young adults (18–30) and older adults (65+). It aims to see if age affects how fisetin works, which could help in future treatments for aging-related conditions.
GreifswaldAges 18 years+ - NCT06796686RecruitingPhase 1
HIV vaccine safety and immune response study for healthy adults
This trial tests a new two-part HIV vaccine regimen in healthy adults without HIV. The goal is to see if it is safe and produces an immune response that could help prevent HIV.
San Francisco, CaliforniaAges 18–55 - NCT06798012RecruitingPhase 2
TAK-411 for adults with CIDP
This study tests a new investigational drug called TAK-411 for adults with chronic inflammatory demyelinating polyneuropathy (CIDP). It is for people who have already responded to immunoglobulin therapy and are on a stable dose.
La Jolla, CaliforniaAges 18 years+ - NCT06798896RecruitingPhase 2
SPN-817 for hard-to-control focal seizures
This study tests an investigational drug called SPN-817 to see if it can reduce focal seizures (seizures that start in one area of the brain) in adults whose seizures are not well controlled by current medications.
Port Charlotte, FloridaAges 18–70 - NCT06799481Recruiting
Home-based exercise to help brain tumor survivors with thinking and memory
This study tests whether a virtual home-based exercise program can improve thinking and memory problems caused by brain tumor treatment in teens and young adults. It also looks at how exercise affects gut health.
Atlanta, GeorgiaAges 15–39 - NCT06799936Recruiting
Helping older kidney patients decide on treatment with their doctor
This trial tests a program that helps older adults with advanced kidney disease talk with their doctors about treatment options. The goal is to improve shared decision-making before they need dialysis or a transplant.
Hong KongAges 65 years+ - NCT06800469Recruiting
Gut bacteria study in pancreatic cancer surgery patients
This trial looks at gut bacteria in people having surgery for pancreatic cancer. It aims to understand how these bacteria might affect recovery or treatment outcomes.
Bologna, BOAges 18 years+ - NCT06801327Recruiting
Comparing two breathing therapies for bronchiectasis
This trial tests whether a new device called Simeox works better than standard chest physical therapy for people with bronchiectasis (widened airways that trap mucus). It compares how well each method clears mucus from the lungs.
Bologna, BolognaAges 18 years+ - NCT06801379RecruitingEarly Phase 1
Inhaled melatonin spray for adults with insomnia
This trial tests a new inhaled form of melatonin, a natural sleep hormone, for adults aged 55 and older with insomnia. It aims to see how the medication works in the body and if it can help you fall asleep faster.
Macquarie Park, New South WalesAges 55 years+ - NCT06802315RecruitingPhase 2
Radiation therapy before stem cell transplant for high-risk blood cancers
This trial tests a precise type of radiation called intensity modulated total marrow irradiation before a stem cell transplant. It aims to destroy cancer cells while reducing side effects for patients with high-risk leukemia or myelodysplastic syndrome.
Chicago, IllinoisAges 18–65 - NCT06802913RecruitingEarly Phase 1
Inhaled melatonin for sleep problems in older adults
This trial tests a new inhaled form of melatonin to help adults aged 55 and older with insomnia fall asleep faster. It compares the inhaled melatonin to a placebo to see if it improves sleep and is safe.
Macquarie Park, New South WalesAges 55 years+ - NCT06803706Recruiting
Gut bacteria changes during smoking quit attempt
This study looks at how quitting smoking changes your body's gut bacteria and metabolism. It is for people with a substance use disorder who want to stop smoking.
FehringAges 18 years+ - NCT06803771Recruiting
Pancreatic health monitoring after diabetes diagnosis
This study follows people newly diagnosed with type 2 diabetes to check their pancreas health using blood tests and MRI scans. It aims to find any early signs of pancreatic disease.
Sandbach, CheshireAges 50–84 - NCT06804694Recruiting
Technology-based support for young adults with type 1 diabetes distress
This study tests a special program that combines technology and a care team to help young adults with type 1 diabetes who feel stressed or overwhelmed by their diabetes. The goal is to see if this approach is helpful and manageable for participants.
Toronto, OntarioAges 18–29 - NCT06805786Recruiting
Switching from scanned to real-time CGM for type 2 diabetes
This study tests whether switching from a FreeStyle Libre 2 (which you scan to check sugar) to a Dexcom G7 (which sends sugar readings automatically to your phone) can improve blood sugar control in adults with type 2 diabetes who use insulin.
Toronto, OntarioAges 18 years+ - NCT06807060Recruiting
Lifestyle program to boost quality of life for older adults
This trial tests a simple program to help older adults improve their daily wellbeing. It is designed for people age 70+ who live alone and get little or no help at home.
GothenburgAges 70 years+ - NCT06809166RecruitingPhase 4
Contrave for weight loss in adults with obesity
This study tests whether a weight loss medication called Contrave can help adults with obesity lose weight by changing how their body uses energy and handles food. If you qualify, you will take Contrave and be monitored for several months.
Ottawa, OntarioAges 18–64 - NCT06809179RecruitingPhase 2
Nasal spray for social anxiety
This study tests if a new nasal spray called fasedienol helps quickly reduce anxiety in adults with social anxiety disorder. The spray is used as needed in a repeat-dose design, meaning you might use it more than once.
Sherman Oaks, CaliforniaAges 18–65 - NCT06810596Recruiting
Comparing two insulin infusion methods for diabetic ICU adults
This trial compares two ways of giving insulin through an IV to adults with diabetes in the intensive care unit to find which works better for controlling blood sugar.
IsmailiaAges 19 years+ - NCT06811324RecruitingPhase 2
Tirzepatide for muscle and vessel health in older adults
This study tests if the drug tirzepatide can improve muscle and blood vessel health in older adults with obesity. You may be eligible if you are 50 or older, have a BMI between 30 and 40, and do not have diabetes.
San Antonio, TexasAges 50 years+ - NCT06812598Recruiting
Extended letermovir to prevent CMV after stem cell transplant
This trial tests whether taking letermovir for a longer time can prevent CMV (a common virus) from reactivating in adults with certain risk factors after a donor stem cell transplant. If you're preparing for your first transplant and have a high-risk donor or conditioning, this study may be an option.
Suzhou, JiangsuAges 18 years+
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Common questions
- Are there clinical trials for adult?
- Yes. Clin2 currently lists 3,743 recruiting adult 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 adult 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 adult 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.