Clinical trials
MDD clinical trials
Below are recruiting mdd clinical trials, each written for real people, not researchers. We’re tracking 109 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07603804Recruiting
Accelerated Brain Stimulation for Treatment-Resistant Depression
This study tests an accelerated form of iTBS (a non-invasive brain stimulation technique) for depression that hasn't improved with antidepressant medications. The goal is to help people with major depression who haven't responded adequately to at least one antidepressant drug.
IstanbulAges 18–65 - NCT07604753Recruiting
Comparing two mental health screening questionnaires
This study compares two different questionnaires that doctors use to diagnose mental health conditions. Researchers want to check if a newer, shorter questionnaire works just as well as the longer standard one.
Hong KongAges 18 years+ - NCT07645157RecruitingPhase 2
Sertraline and Probiotics for Teen Depression
This study tests whether combining an antidepressant medication (sertraline) with special bacteria supplements (probiotics) can help treat depression in teenagers ages 12–18. Researchers believe the probiotics may help the medication work better by improving gut health.
Chongqing, YuzhongAges 12–18 - NCT07579078Enrolling by invitation
Vitamin D and Brain Activity in Women With Depression
This study tests whether vitamin D supplements can improve brain wave patterns in women diagnosed with depression who have low vitamin D levels. Researchers will measure brain activity using EEG (a non-invasive test that records electrical signals from the brain) before and after vitamin D treatment.
DhakaAges 20–40 - NCT07369180Enrolling by invitation
TMS for treatment-resistant depression in adults
This study tests a new type of transcranial magnetic stimulation (TMS) for adults whose depression hasn't gotten better with medication. It compares the real treatment to a sham (inactive) version to see how well it works.
Campbell, CaliforniaAges 22–85 - NCT07345858Enrolling by invitation
Saliva test for psychedelic depression treatment
This trial tests whether a simple saliva test can measure oxytocin levels during a psychedelic treatment for hard-to-treat depression. The goal is to find a biological marker that helps predict how well the therapy works.
GenevaAges 18 years+ - NCT07314190Enrolling by invitation
Blood tests for brain diseases and mental health conditions
This study looks at blood tests to help diagnose and track brain diseases (like Alzheimer's) or mental health conditions. It compares patients to healthy volunteers to find better ways to detect and monitor these illnesses.
BarcelonaAges 18 years+ - NCT07239843Enrolling by invitation
Study of blood markers and mental health in brain diseases
This study looks at how social factors and blood markers relate to psychiatric symptoms in people with brain diseases or mental disorders. It aims to find new ways to understand and diagnose these conditions.
Barcelona, BarcelonaAges 18 years+ - NCT07234851Enrolling by invitation
Brain tissue study of synaptic loss in mental and brain diseases
This study looks at how brain connections break down in people with psychiatric disorders (like schizophrenia, depression, or bipolar disorder) or neurodegenerative diseases (like Alzheimer's or frontotemporal dementia). It uses donated brain tissue after death to understand why symptoms occur.
BarcelonaAges 40 years+ - NCT06821646Enrolling by invitation
Brain responses in depression and autism with TMS and EEG
This study uses brain stimulation (TMS) and brain wave recording (EEG) to understand how the brain works in people with autism, depression, or both. It may help find better ways to treat these conditions.
TaipeiAges 20–50 - NCT06692361Recruiting
Gut bacteria transplant for depression not helped by escitalopram
This trial tests whether transplanting healthy gut bacteria (fecal microbiota) can help people with depression that does not respond well to the antidepressant escitalopram. You will first take escitalopram for 2 weeks, and if it doesn't help enough, you may receive either the real transplant or a placebo capsule.
Wuhu, AnhuiAges 18–65 - NCT06512324Enrolling by invitation
TMS with remote viewing for depression and anxiety
This trial tests whether adding 'remote viewing' (a technique where a person tries to perceive a distant target) to standard TMS brain stimulation can improve depression and anxiety symptoms. It is for people already getting TMS and who can attend weekly visits.
Encinitas, CaliforniaAges 12 years+ - NCT06026904Enrolling by invitation
Testing vagus nerve stimulation for motivation in depression
This trial tests if a gentle nerve stimulation device can improve motivation and interest in people with depression and a lack of pleasure or drive. You keep taking your usual antidepressant pill during the study.
Hefei, AnhuiAges 18–60
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Common questions
- Are there clinical trials for mdd?
- Yes. Clin2 currently lists 109 recruiting mdd 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 mdd 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 mdd 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.