84 Recruiting Trials

Clinical Trials
for Depression in California

84 clinical trials for Depression are currently recruiting participants at study sites in California. Study-related care is provided at no cost.

84
Recruiting trials
217
Study sites
86
Cities
18
Industry-sponsored
21
Phase 2
10
Phase 3

Depression clinical trials in California: what to expect

Depression trials cover new medicines, brain stimulation, talk therapy and digital programs. The busiest area is treatment-resistant depression: studies for people whose current antidepressant has not helped enough, testing rapid-acting medicines, add-on treatments and devices such as transcranial magnetic stimulation. Others compare types of therapy, test app-based programs, or study depression alongside another condition such as chronic pain or heart disease.

In California, recruiting depression studies are concentrated in Los Angeles, San Diego, San Francisco and Sacramento, with sites in 82 other cities. 18 of the 84 are run by a drug or device company, which usually means a larger study with travel reimbursement; the rest are academic or hospital-led.

Who depression trials usually look for

Most adult trials require a diagnosis of major depressive disorder, a current episode with symptoms above a threshold on a standard questionnaire, and ages 18 to 65. Treatment-resistant trials ask that one or two antidepressants at a proper dose have not worked in the current episode. Common exclusions are bipolar disorder, psychosis, a substance use disorder in the last year and, for safety, a high current suicide risk. Many trials let you continue stable talk therapy.

Some medicine trials add the study drug to the antidepressant you take; others require a supervised taper first. The listing says which.

What taking part involves

Screening is a structured interview with a clinician plus blood work. Medicine trials usually run six to twelve weeks with weekly or fortnightly visits and mood questionnaires, and many include a placebo arm, with close safety monitoring either way; an open-label extension often follows so everyone can receive the active drug. Therapy and app trials run eight to sixteen weeks and compare against usual care. Treatment, visits and tests are free, and most trials pay for time.

Questions worth asking the study team

Whether you would taper your current medicine and how that is supervised; the chance of placebo and whether there is an open-label extension; what happens if you feel worse during the study; and whether your own doctor is kept informed. Research records are kept separate from your medical record unless you ask otherwise.

Showing 20 of 84 recruiting Depression trials in California

Mindfulness Engaged Neurostimulation for Depression (MEND II)
PHASE2 San Diego, California NCT07512284
This trial is looking for people with major depression that hasn't improved with previous treatments. Participants will try a new combined approach of brain stimulation and mindfulness training to help reduce their depression symptoms.
Recruiting
ACE-D Aim 3 Clinical Cognitive Trial to Enhance Translation in Depression
PHASE2 Palo Alto, California +1 sites NCT06408246
This trial is looking for people with depression to understand how a medication called guanfacine affects brain function and thinking skills. Participants will need to complete some assessments and take the medication for the duration of the study.
Recruiting
Be Well at Work-Plus: A Depression and Physical Activity Intervention for Hospital Service Workers (Aim 2)
NA San Diego, California NCT06753123
This trial is looking for hospital service workers who have symptoms of depression and need support in their jobs. Participants will get help through coaching, therapy focused on work, and text message support for their mood and activities.
Recruiting
Sleep and Light Intervention (SALI) for Menopausal Mood Dysfunction
NA San Diego, California NCT06678880
This trial is looking for women aged 45-75 who are experiencing mood changes or depression during menopause. Participants will help researchers learn if adjusting sleep and light can improve these symptoms.
Recruiting
Probiotic Administration for Adolescent Depression
EARLY_PHASE1 San Francisco, California NCT06898788
This trial is looking for young people aged 15 to 24 who have depression. Participants will take a probiotic called Visbiome and have remote visits to monitor their health.
Recruiting
Health And Response: Digital Markers for Outcomes in Perinatal Depression Treatment Study
NA Los Angeles, California NCT07577947
This trial is looking for women who are pregnant or have recently given birth and are experiencing moderate to severe depression. Participants will receive a digital therapy program and be monitored throughout the treatment period.
Recruiting
Positive Affect Treatment for Adolescents With Early Life Adversity
NA Irvine, California NCT06273137
This trial is looking for young people aged 12 to 16 who have faced two or more difficult experiences during childhood. Participants will take part in a program aimed at increasing positive feelings and will be compared to others who are not receiving this treatment.
Recruiting
Combined Neuromodulation and Cognitive Training for Post-mTBI Depression
NA La Jolla, California NCT05682677
This trial is looking for adults with depression who have had a mild traumatic brain injury (TBI). Participants will receive a combination of cognitive training and brain stimulation treatment for 4 weeks to help improve their symptoms.
Recruiting
S.T.A.N.D. Alacrity Center Signature Project
NA Los Angeles, California NCT05591937
This trial is looking for students from East Los Angeles College with depression or anxiety. Participants will receive online support for 40 weeks, including assessments and possible therapy options.
Recruiting
Characterization and Treatment of Adolescent Depression
N/A Los Angeles, California +2 sites NCT03388606
This trial is looking for teenagers aged 11-17 who are experiencing depression. Participants will undergo evaluations and may receive therapy for up to 25 weeks.
Recruiting
Treating Major Depression With Yoga Mono-therapy
NA San Francisco, California NCT06091527
This trial is looking for adults who have mild to moderate depression to participate in a 12-week yoga program. Participants will compare the effects of yoga to a control group receiving education about holistic health.
Recruiting
Sleep TMS for Depression
NA Stanford, California NCT06824415
This trial is looking for adults with major depression who have not responded to previous antidepressants. Participants will receive a new treatment called sleep-state transcranial magnetic stimulation to see if it helps improve their condition.
Recruiting
Characterizing Cognitive Decline in Late Life Depression: The ADNI Depression Project
N/A San Francisco, California +1 sites NCT02434393
This trial is looking for individuals with late life depression to understand how it affects thinking and memory. Participants will undergo brain scans and provide health information over a 30-month period.
Recruiting
Multicenter Study of Lumateperone for the Treatment of Bipolar Depression in Pediatric Patients
PHASE3 Anaheim, California +4 sites NCT06372964
This trial is looking for young people aged 10 to 17 who have bipolar depression. Participants will receive either the study medication or a placebo while their mood is monitored.
Recruiting
Brexanolone Lifting Outcomes Of Moms
PHASE3 Canoga Park, California +4 sites NCT07822321
This trial is looking for women aged 15 to 45 who are experiencing severe postpartum depression. Participants will take the study drug LPCN 1154A to see if it helps reduce their depressive symptoms and to learn about any side effects.
Recruiting
Biomarker-guided rTMS for Treatment Resistant Depression
PHASE3 Stanford, California +1 sites NCT04041479
This trial is looking for adults aged 22 to 65 with major depression that hasn't improved with medication. Participants will receive a treatment called repetitive transcranial magnetic stimulation (rTMS) and will help researchers learn more about how it works.
Recruiting
A Study to Assess the Efficacy, Safety and Tolerability of VLS-01 Buccal Film, Compared to Placebo in Patients With Treatment Resistant Depression (ELUMINA)
PHASE2 Garden Grove, California +4 sites NCT06524830
This trial is looking for adults with treatment resistant depression. Participants will receive either a new treatment called VLS-01 Buccal Film or a placebo to see how effective it is.
Recruiting
ALTO-207 in Adults With Treatment-resistant Depression (TRD)
PHASE2 Chino, California +4 sites NCT07553637
This trial is looking for adults aged 18 to 75 who have moderate to severe depression that hasn't improved with other treatments. Participants will compare the effects of ALTO-207 with a placebo.
Recruiting
Meditative Neurofeedback for Depression
PHASE1 La Jolla, California NCT06675240
This trial is looking for people with moderate depression. Participants will try a meditative feedback treatment designed to help improve their mood.
Recruiting
Treatment ResistAnt Depression Subcallosal CingulatE Network DBS (TRANSCEND)
NA Los Angeles, California +4 sites NCT06423430
This trial is looking for adults with treatment resistant depression who have not improved with other treatments. Participants will receive a new type of brain stimulation as part of their care.
Recruiting

Where the Depression studies are in California

  • Stanford University, Stanford5 trials
  • University of California, San Francisco, San Francisco5 trials
  • Children's Hospital Los Angeles, Los Angeles4 trials
  • San Diego State University, San Diego3 trials
  • University of California San Diego, La Jolla3 trials
  • University of California, Los Angeles, Los Angeles3 trials

Counts are recruiting studies listing at least one site in California, from ClinicalTrials.gov, refreshed every two days.

Depression clinical trials in California: common questions

How many Depression clinical trials are recruiting in California?
TrialFinder currently lists 84 recruiting Depression clinical trials with study sites in California. Results are updated regularly from ClinicalTrials.gov, the official U.S. registry of clinical studies.
Where are Depression clinical trials located in California?
Study sites for the Depression trials listed on this page include San Diego, Palo Alto, San Francisco, Los Angeles, Irvine, La Jolla. Each trial page lists every participating site with contact details, so you can find the location closest to you.
Do I need insurance to join a Depression clinical trial in California?
No. Study-related care is covered by the trial sponsor at no cost to participants, including the study treatment, required lab tests and study visits. Many Depression trials in California also compensate participants for time and travel. Health insurance is not required to search or enroll.
How do I qualify for a Depression clinical trial in California?
Each study sets its own criteria based on age, Depression diagnosis details, prior treatments, current medications and general health. The fastest way to find out is to contact a research site directly — most will pre-screen you by phone in 10 to 15 minutes at no charge. You can also create a free TrialFinder profile to be matched automatically.
Do I have to stop my antidepressant to join a depression trial?
Not always. Many trials add the study treatment to the antidepressant you already take; others ask for a supervised taper before starting. Each listing states which, and the study doctor manages any change.
Is there a placebo in depression trials?
Most medicine trials include a placebo arm, often with two active participants for every one on placebo, and usually followed by an extension where everyone receives the drug. Therapy, device and app trials generally compare against usual care instead.
Can I join if I am already seeing a therapist?
Usually yes for medicine trials, provided the therapy has been ongoing and stable. Trials of a specific therapy may ask you not to start a second one during the study.
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Depression trials investigate antidepressant medications, TMS, ketamine infusions, psychotherapy protocols, and digital mental-health interventions.

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