Clinical trials
Effectiveness clinical trials
Below are recruiting effectiveness clinical trials, each written for real people, not researchers. We’re tracking 6,378 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05322213RecruitingPhase 1
THC study for blood sugar control in type 2 diabetes
This early-phase study tests how THC (the main cannabis ingredient) affects blood sugar levels in people with type 2 diabetes. It may help researchers understand whether THC changes glucose control and what risks come with it.
La Jolla, CaliforniaAges 21–70 - NCT05345015Recruiting
Radio waves for muscle or low back pain and function
This trial tests whether a high-frequency radio-wave treatment can reduce pain and improve movement in adults with a muscle strain (hamstring) or acute or chronic low back pain. It may help you feel less pain and function better, depending on your specific injury and medical details.
KavalaAges 18–65 - NCT05358834Recruiting
Melatonin study to change uterine contractions near delivery
This study tests whether taking melatonin affects uterine contractions (how strongly and how often the uterus tightens) in pregnant people close to delivery. It may help researchers understand whether melatonin can influence labor-related processes and timing.
Boston, MassachusettsAges 18–35 - NCT05285007Recruiting
Study tests whether limited ankle motion affects knee squats
This study looks at people with patellofemoral pain (kneecap pain) to see how limited ankle movement may affect how your knee works during single-leg squats. It may help clinicians better understand what to focus on for treatment.
Loma Linda, CaliforniaAges 18–59 - NCT05282277RecruitingPhase 4
Estradiol to improve brain and reward changes in midlife women
This study tests whether a hormone called estradiol (given as a patch and pill) changes how the brain and body respond to reward in some midlife women with low pleasure and/or psychosis symptoms during menopause transition. It may help researchers understand whether estrogen treatment can improve mood-related “reward” function in this group.
Chapel Hill, North CarolinaAges 45–55 - NCT05268588Recruiting
Post-birth health texting study during late pregnancy
This study tests whether phone-based (mHealth) messages and support can improve health after you give birth. It may help you stay informed and get support during the weeks right after delivery.
Chandīgarh, HaryanaAges 18–49 - NCT05275686RecruitingPhase 2
Fluticasone spray system for long-term ear pressure problems
This Phase 2 study tests a new way of delivering a steroid medicine (fluticasone) through the nose to treat eustachian tube dysfunction, which can cause ear pressure, popping, or discomfort. It may help by reducing swelling around the eustachian tube so the ear can drain and equalize pressure better.
Los Angeles, CaliforniaAges 18–80 - NCT05303415Recruiting
Low-intensity ultrasound study during brain MRI
This study tests how low-power focused ultrasound changes brain signals measured during MRI. You may help researchers understand how ultrasound can affect brain activity, even if you don’t have a known brain condition.
Roanoke, VirginiaAges 18–65 - NCT05260177Recruiting
40 Hz light therapy for mild to moderate Alzheimer’s
This study tests whether a non-invasive 40 Hz light therapy system can help people with early Alzheimer’s. You’ll likely use the device at home and wear a small activity monitor, while doing memory and thinking tests.
RoskildeAges 40 years+ - NCT05305794RecruitingPhase 3
Weekly shot to improve blood sugar control in double diabetes
This trial tests a weekly injection (similar to Ozempic) for people with type 1 diabetes who also have features of type 2 diabetes (often called 'double diabetes'). The goal is to see if this extra treatment can help lower blood sugar and improve overall diabetes management.
DijonAges 18 years+ - NCT05297734Recruiting
Study compares two cancer support care plans
This study tests two different ways of providing supportive care for adults with cancer to see which one works better. It may help improve comfort, support, and care coordination during treatment.
Birmingham, AlabamaAges 18 years+ - NCT05265546RecruitingPhase 1
Psilocybin study of changes in how you see
This Phase 1 study tests whether psilocybin affects visual perception and how visual information is represented in the brain. It also studies safety and what brain/vision changes happen after the dose.
Berkeley, CaliforniaAges 21 years+ - NCT05303649Recruiting
Theta burst brain stimulation for language problems after stroke
This study tests whether a type of brain stimulation guided by a brain scan (MRI) can improve speech and language (“aphasia”) after a stroke. It may help people who have trouble producing speech but can still understand others’ words.
Warsaw, Masovian VoivodeshipAges 18–75 - NCT05289934Recruiting
Recorded music to see how it affects seizures
This study is testing whether listening to recorded music can change seizure activity and brain-wave patterns in children monitored in an epilepsy center. Your child might benefit by helping researchers learn how music could affect seizures during close observation.
Baltimore, MarylandAges 4–17 - NCT05301608RecruitingPhase 1/Phase 2
Psilocybin study of brain activity and changing thoughts
This Phase 1/2 study tests psilocybin to see how it affects brain signals and the “content” of thoughts while you are monitored during the study. Because participants must be generally healthy and mentally stable, it may be an option if you meet those safety and medication rules and are comfortable having your brain activity measured.
Baltimore, MarylandAges 18–75 - NCT05283382RecruitingEarly Phase 1
Cannabidiol trial for learning and anxiety
This early-phase study tests how cannabidiol (CBD) affects learning and anxiety. You may be able to join if you meet age and health requirements and have not used CBD or other cannabis recently.
Storrs, ConnecticutAges 18–50 - NCT05265299RecruitingPhase 3
Testing the right aspirin dose for COPD symptoms
This Phase 3 trial studies which aspirin dose works best in people with COPD, with the goal of improving disease control. You may be asked to take aspirin and be monitored for safety, especially bleeding risk and heart/brain history.
Baltimore, MarylandAges 40–80 - NCT04911036Recruiting
Compare parent stress after diagnosis before versus after birth
This study looks at how the timing of a baby’s diagnosis—before birth (antenatal) versus after birth (postnatal)—affects parents’ stress and emotional reactions after their child has surgery. You may be able to contribute by sharing experiences as a parent of a child who had this specific surgery.
LilleAges 18 years+ - NCT05254431Recruiting
Exercise timing program for breathing trouble and sleep apnea
This trial tests whether doing exercise at set intervals can improve daily function in Veterans who have both COPD (lung disease) and OSA (sleep apnea). It may help you move and function better while managing symptoms from both conditions.
Salem, VirginiaAges Any age - NCT05223192Recruiting
Testing music to improve breathing and brain oxygen in preemies
This study looks at whether planned music sessions can help preterm babies breathe more steadily and improve oxygen reaching the brain. It may help staff learn how to use music therapy safely for newborns in the NICU.
New York, New YorkAges 6 months–9 months - NCT05205317Recruiting
VR alone or VR plus metformin for C-section scar healing
This study compares two treatments to help improve a C-section scar defect (an issue seen on the uterus scar). Some participants may receive virtual reality (VR) therapy plus metformin, while others receive VR alone, and the researchers will look at symptoms and scar healing.
Shanghai, Shanghai MunicipalityAges 18–40 - NCT05215886Enrolling by invitation
Bariatric surgery and memory problems in people with obesity
This study looks at how bariatric (weight-loss) surgery may affect memory and thinking in people with obesity who already have memory decline or dementia. It may help doctors understand which patients benefit most and what changes to expect.
Sacramento, CaliforniaAges 18–75 - NCT05236374Recruiting
Daily beef in a heart-healthy diet to study zinc cells
This study tests whether eating daily beef as part of a heart-healthy diet changes how your body’s cells handle zinc, a mineral important for many functions. It’s designed for older adults and includes strict diet and medication rules to keep results accurate.
Davis, CaliforniaAges 55–70 - NCT05214924Enrolling by invitationPhase 2/Phase 3
PRF injections for mild to moderate jaw joint wear
This study tests whether injecting iPRF (a therapy made from your blood growth factors) into the jaw joint can reduce symptoms from mild to moderate jaw joint degeneration. It’s being compared against standard care for people who currently are not on other jaw-joint treatments.
WroclawAges 18–80
Hear when a new Effectiveness trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
Common questions
- Are there clinical trials for effectiveness?
- Yes. Clin2 currently lists 6,378 recruiting effectiveness 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 effectiveness 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 effectiveness 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.