Clinical trials · California
Obsessive-Compulsive Disorder clinical trials in California
We’re tracking 14 recruiting obsessive-compulsive disorder studies with a site in California — including Phase 1/Phase 2 and Phase 2 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT03826693RecruitingPhase 2
Nitrous oxide trial for obsessive-compulsive disorder symptoms
This Phase 2 pilot study tests whether breathing nitrous oxide (laughing gas) can reduce symptoms of obsessive-compulsive disorder (OCD). It compares what happens during a treatment-free period and then during the study treatment to see if symptoms improve.
Stanford, CaliforniaAges 18–65 - NCT03918577Recruiting
Caloric stimulation to help thinking in OCD spectrum
This trial studies whether a gentle inner-ear stimulation can change how people experience troubling thoughts in OCD-spectrum conditions. If you have strongly held intrusive worries related to these conditions, the study may help see whether this approach can reduce their impact.
Stanford, CaliforniaAges 18–65 - NCT04899687RecruitingPhase 2
Dextromethorphan for OCD and related anxiety conditions
This trial studies dextromethorphan, a medicine sometimes used for cough, to see if it can reduce symptoms in OCD and similar conditions. It may help people whose intrusive thoughts or related worries are still challenging despite current care.
Stanford, CaliforniaAges 18–65 - NCT04958096Recruiting
Brain stimulation study for severe OCD symptoms
This trial studies a form of brain stimulation to help reduce severe obsessive-compulsive disorder (OCD) symptoms. It may be an option if your OCD has not improved despite several standard treatments and therapy.
San Francisco, CaliforniaAges 22–75 - NCT05623306Recruiting
Brain stimulation surgery for OCD using a guided DBS system
This trial studies whether deep brain stimulation surgery—guided using special scans—can reduce severe obsessive-compulsive disorder (OCD) symptoms. It may help people whose OCD has not improved enough with standard medicines and therapy.
Stanford, CaliforniaAges 22–75 - NCT05783817RecruitingPhase 2
MDMA-assisted therapy for OCD in adults
This trial tests whether MDMA plus cognitive behavioral therapy (CBT) can reduce OCD symptoms in adults who have tried standard OCD treatments before. You may be asked to pause certain medicines and follow specific diet/medication rules around the study session.
Palo Alto, CaliforniaAges 18 years+ - NCT05881356Recruiting
Study factors affecting people with OCD during treatment
This study looks at what helps or gets in the way for people living with obsessive-compulsive disorder (OCD) as they go through a clinical study process, including visits and required tests. Your experience could help improve how future studies are run and how patients are supported.
San Francisco, CaliforniaAges 18 years+ - NCT05940324RecruitingPhase 2
Ketamine study for OCD after prior treatment failed
This Phase 2 study tests how ketamine may work quickly in people with obsessive-compulsive disorder (OCD), especially after at least one standard treatment didn’t help. If you join, you’ll need to follow study procedures like fasting before the experimental visit and not enrolling in other medication trials during the study.
Stanford, CaliforniaAges 18–65 - NCT06173752Recruiting
How exposure therapy works for OCD
This study looks at how exposure therapy helps people with OCD. It aims to understand the mechanisms behind why this treatment is effective.
San Diego, CaliforniaAges 18–65 - NCT06376734RecruitingPhase 2
TMS for depression, anxiety, OCD, or schizophrenia
This study tests whether a brain stimulation technique called TMS can help people with depression, anxiety, OCD, or schizophrenia. It aims to find better ways to target the treatment for each person's specific needs.
Sunnyvale, CaliforniaAges 18–65 - NCT06575075RecruitingPhase 1/Phase 2
Ketamine study for OCD
This study tests a form of ketamine called RR-HNK as a possible new treatment for OCD. It is for people who have not gotten enough relief from standard treatments or chose not to take them.
Palo Alto, CaliforniaAges 18–65 - NCT07065669Recruiting
TMS for teens with OCD
This study tests if transcranial magnetic stimulation (a non-invasive brain stimulation technique) can help treat obsessive-compulsive disorder in adolescents aged 13-17. It aims to see if this treatment can reduce OCD symptoms when added to stable medications or therapy.
San Francisco, CaliforniaAges 13–17 - NCT07146438Recruiting
TMS and therapy for obsessive-compulsive disorder
This study tests whether combining brain stimulation (rTMS) with talk therapy can help people with OCD. It involves daily visits for 6 weeks and is for those who have already tried ERP therapy and SRI medication.
Los Angeles, CaliforniaAges 18 years+ - NCT05254015Enrolling by invitation
Therapy for hoarding symptoms in adults 50+
This trial tests a combined therapy approach (cognitive rehabilitation plus exposure therapy) to reduce hoarding behaviors in older adults. You may benefit if your hoarding is your main diagnosis and your symptoms and medications are stable.
San Diego, CaliforniaAges 50 years+
Obsessive-Compulsive Disorder trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting obsessive-compulsive disorder studies listed above.
- Stanford University · 6 studies
- Acacia Clinics
- Center for Understanding and Treating Anxiety
- Department of Psychiatry & Behavioral Sciences
- Guava Hall
- Power Life Sciences
- UCSF Nancy Friend Pritzker Psychiatry Building
- University of California, San Francisco
What taking part in a obsessive-compulsive disorder study involves
A screening visit first
Before anything else, the study team checks whether you fit — usually a visit with some tests. You can stop at any point, and screening is typically free.
Care at a nearby site
Study visits happen at a clinic or hospital taking part. Many studies cover the cost of the study treatment and related visits, and some reimburse travel.
You stay in control
Taking part is voluntary and you can leave a study at any time, for any reason, without affecting your regular care.
The team decides eligibility
Our fit check is a helpful first read, not a decision. The study team makes the final call after reviewing your health history.
Obsessive-Compulsive Disorder trials in other states
Common questions
- Are there obsessive-compulsive disorder clinical trials in California?
- Yes. We're currently tracking 14 recruiting obsessive-compulsive disorder studies with a site in California, each rewritten in plain language so you can see what it's testing and who it's for.
- How do I find out if I qualify for a obsessive-compulsive disorder study in California?
- Each study lists its eligibility rules — age, diagnosis, prior treatments. On every trial page we explain these in plain language and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Do I have to live in California to take part?
- Not necessarily. These studies have a site in California, but eligibility is about your health, not your address — some people travel to take part, and a few studies reimburse travel. The study team can tell you what's required.
- Does it cost anything to join a obsessive-compulsive disorder trial?
- Using Clin2 is always free. Many trials cover the study treatment and related visits; some reimburse travel. The study team explains exactly what's covered before you decide.
Not the right time?
New obsessive-compulsive disorder studies open in California regularly. Set up a health profile and we’ll quietly watch for studies that fit you and email you when one opens.
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.