Clinical trials
Effectiveness clinical trials
Below are recruiting effectiveness clinical trials, each written for real people, not researchers. We’re tracking 6,871 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT03984591Enrolling by invitationPhase 4
Compare spironolactone vs eplerenone for heart failure patients
This study uses Denmark’s heart failure registry to compare two common tablet medicines—spironolactone and eplerenone—for people with symptomatic systolic heart failure. It aims to see which one leads to better health outcomes over time.
CopenhagenAges Any age - NCT03692455Enrolling by invitation
Compare two weight-loss surgeries for reflux over 8 years
This study follows people for up to 8 years to see how two different weight-loss surgeries affect ongoing heartburn and acid reflux. You would join only if you were already enrolled in an earlier related study and can complete required follow-up visits and tests.
Passo Fundo, Rio Grande do SulAges 18–78 - NCT03687710Enrolling by invitation
Alzheimer’s registry for people with memory concerns or risk
This is a research registry that helps doctors compare how different memory and Alzheimer’s risk groups change over time. It may help researchers learn which people are more likely to develop Alzheimer’s and how to better track early changes.
New York, New YorkAges 18–99 - NCT03395509Enrolling by invitation
Free screening program for diabetes and heart risks
This study looks at how well and how cost-effective a combined health screening is for diabetes and cardiovascular (heart and blood vessel) risks. You may be invited to attend screening around your 67th birthday.
ViborgAges 67–67 - NCT03384927Enrolling by invitation
Dairy intake study for muscle stiffness in spasticity
This trial looks at whether eating dairy can reduce spasticity, or muscle stiffness/tightness. It’s testing dairy as an add-on by comparing your muscle symptoms and treatment goals during the study.
Glostrup MunicipalityAges Any age - NCT03101722Enrolling by invitation
Huperzine A for hearing loss, tinnitus, and mild memory issues
This trial tests whether huperzine A can improve hearing-related symptoms along with tinnitus (ringing) and mild cognitive (memory/thinking) problems. If you have mild-to-moderate hearing loss plus bothersome constant tinnitus and some cognitive decline, this study may help researchers see if the treatment makes a difference.
Shanghai, Shanghai MunicipalityAges 60 years+ - NCT03032601Enrolling by invitation
N-acetyl cysteine study for people with multiple sclerosis
This study tests whether N-acetyl cysteine (a supplement-like medicine) changes body and brain function in people with multiple sclerosis. It may help researchers understand how it affects brain chemistry and activity using special brain imaging.
Philadelphia, PennsylvaniaAges 18 years+
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Common questions
- Are there clinical trials for effectiveness?
- Yes. Clin2 currently lists 6,871 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.