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
- NCT06373328Recruiting
Pneumococcal carriage study for kids and older adults
This study checks how common pneumococcal bacteria are in the nose and throat of healthy children and adults after the pandemic. It involves one online questionnaire and one gentle nasal swab.
Orlando, FloridaAges 7 months+ - NCT06230744Recruiting
A weight loss program for young adults using a smartphone app
This study tests a new weight loss program designed specifically for young adults ages 18 to 40. You will use a smartphone app to help you lose weight, and the study will see if the program works well for people in your age group.
Chicago, IllinoisAges 18–40 - NCT07320651Recruiting
Trial on shared decisions about period care and birth control
This study looks at how to help teens and young adults, ages 12 to 25, make choices together with their doctor about hormone medications for managing periods or birth control.
Geneva, Canton of GenevaAges 12–25 - NCT06792188Recruiting
Using a smartwatch to predict sleep apnea
This trial tests if a smartwatch can help predict sleep apnea in people who have symptoms like snoring or daytime sleepiness. It may offer a simpler way to identify the condition.
SeoulAges 22–85 - NCT06885970Recruiting
Cytisine for smoking cessation and heart health
This study tests whether a medicine called cytisine can help people quit smoking and how it might affect their heart health. If you are a smoker without serious heart, liver, kidney, or immune problems, you may be able to join.
Athens, HaidariAges 18–75 - NCT06793722Recruiting
Comparing standard and device-based circumcision in children
This study compares standard circumcision with a procedure that uses a special device to see if the device works better. It’s for children having circumcision for medical or religious reasons, and who are otherwise healthy with no genital issues.
AdıyamanAges 6–18 - NCT06924164Recruiting
Strength training for snapping hip syndrome
This trial tests if progressive strength training can reduce pain and snapping in adults with external snapping hip. If you have a snapping or popping sensation on the outside of your hip with discomfort, this study may help find a non-surgical treatment option.
AalborgAges 18–40 - NCT06797804Recruiting
Horticultural therapy for older adults in long-term care
This study tests if an app-guided gardening program can improve heart health, reduce stress and depression, and boost happiness in older adults living in nursing homes. It aims to see if these sessions can help you feel better overall.
TaipeiAges 65 years+ - NCT07586111Recruiting
Plant Foods for Better Gut and Heart Health
This study tests whether eating more plant-based foods improves your gut bacteria, digestion, and heart health markers. You'll follow a structured diet plan for several weeks while providing blood, stool, and urine samples to measure changes.
LondonAges 30–70 - NCT06498999Recruiting
4-step program for social media addiction in young adults
This trial tests a 4-step training program designed to help young adults reduce social media addiction and improve their overall well-being. If you are between 18 and 30 and feel your social media use is out of control, this study may offer a structured way to regain balance.
Faisalābad, Punjab ProvinceAges 18–30 - NCT06969872Recruiting
Probiotics for Constipation Relief
This trial tests whether taking probiotics can help relieve constipation in adults. If you have chronic constipation but no serious health issues, you may be able to join.
Taichung, SouthAges 18–75 - NCT07589231Recruiting
Carbon Fiber Insoles for Athletic Jump and Sprint Performance
This study tests whether special insoles with carbon fiber improve how high you can jump and how fast you can sprint. Researchers want to see if these insoles help healthy young athletes perform better.
Valencia, ValenciaAges 18–30 - NCT06833008RecruitingPhase 1/Phase 2
Study of new medicine IPN01195 for advanced solid tumors
This study tests a new medicine called IPN01195 for adults with advanced solid tumors that have a specific genetic change (MAPK pathway). It aims to see if the drug is safe and works against these cancers when other treatments are no longer working.
Grand Rapids, MichiganAges 18 years+ - NCT06963125Recruiting
Prune juice for constipation in older adults
This study tests whether drinking prune juice can improve bowel movements, reduce constipation symptoms, and enhance quality of life in older adults who have trouble going to the bathroom regularly.
Chiayi City, Chiayi CountyAges 65–100 - NCT06961227Recruiting
Comparing two breathing machine settings in the ICU
This trial compares two different ways a breathing machine can help you breathe. It uses a special imaging technique to see which method works better for patients in the intensive care unit.
SanliurfaAges 18 years+ - NCT06815575RecruitingPhase 1
Study of RC220 with Doxorubicin for Advanced Solid Tumors
This trial tests a new drug called RC220 combined with the chemotherapy doxorubicin for people with advanced solid tumors that have not responded to prior treatments. The goal is to find a safe dose and see how the body handles the combination.
Gosford, New South WalesAges 18–80 - NCT07331207Recruiting
3D-printed expander for narrow upper jaw in young adults
This study tests a new 3D-printed expander that attaches to bone to widen a narrow upper jaw in young adults. It may help if you have a crossbite or need more room in your upper jaw.
Al MansurahAges 18–30 - NCT06816459RecruitingEarly Phase 1
Scent tests to find flavors in menthol cigarettes
This study tests if adult menthol cigarette smokers can identify different flavors by smell. You will complete a simple smell test and then try different cigarettes to see if you can tell flavors apart.
Buffalo, New YorkAges 21–55 - NCT07390188Recruiting
Oral lesions in Egyptian adults
This study will examine how common oral mucosal lesions (sores or changes inside the mouth) are among Egyptian adults. By joining, you help researchers understand which mouth conditions affect people like you.
CairoAges 18 years+ - NCT07341841Enrolling by invitation
Obesity risk factors study in adults
This study looks at how genes and lifestyle affect obesity risk. It includes adults aged 18 to 70 with different weight levels, from overweight to severe obesity.
Augusta, GeorgiaAges 18–70 - NCT07265921RecruitingPhase 1
Study of SIM0609 for advanced solid tumors
This trial tests an investigational new drug, SIM0609, for people with advanced solid tumors that have not responded to standard treatments. The goal is to find a safe dose and see early signs that it might help slow or shrink tumors.
BeijingAges 18 years+ - NCT06940037Recruiting
Aging biology and strength training in older adults
This study looks at how aging affects the way older adults respond to resistance training (exercises using weights or resistance bands). It compares two types of training to see which works better for improving mobility and strength.
Boston, MassachusettsAges 65 years+ - NCT06821295RecruitingPhase 2/Phase 3
Smartphone app to help reduce drinking at shelters
This trial tests a smartphone app that gives you personal tips to help you drink less alcohol, especially if you are staying at or getting services from a shelter. The app sends you messages at the right times to help you cut back on drinking.
Oklahoma City, OklahomaAges 18 years+ - NCT06302452Enrolling by invitation
Adult trauma centers and gun safety study
This study looks at how adult trauma centers help patients stay safe from guns. You may be asked about your access to firearms and get tools to reduce risk.
Baltimore, MarylandAges 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.