Sleep · California
Sleep studies in California
46 studies have at least one recruiting site in California. Sleep research includes insomnia, sleep apnea, narcolepsy and circadian rhythm studies. Some involve nights in a sleep lab; others use wearables or questionnaires at home.
46 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
More recruiting studies (pay not posted)
- RecruitingPhase 3
Evaluating the Effects of Tasimelteon vs. Placebo in Treating Pediatric Insomnia
Vanda Pharmaceuticals
- Location
- Irvine, CA + 18 other US sites
- Eligibility basics
- Ages 2–17
- RecruitingPhase 2
A Study of ORX750 in Participants With Narcolepsy and Idiopathic Hypersomnia
Centessa Pharmaceuticals (UK) Limited
- Location
- Long Beach, CA + 26 other US sites
- Eligibility basics
- Ages 18–65
- RecruitingPhase 2
A Long-term Extension Study of ORX750 in Participants With Narcolepsy and Idiopathic Hypersomnia
Centessa Pharmaceuticals (UK) Limited
- Location
- Santa Ana, CA + 18 other US sites
- Eligibility basics
- Ages 18–65
- RecruitingPhase 2/Phase 3
A Study of TAK-861 for the Treatment of Selected Central Hypersomnia Conditions
Takeda
- Location
- Redwood City, CA + 18 other US sites
- Eligibility basics
- Ages 16–70
- Recruiting
Behavioral Treatment of Insomnia in Active-Duty Service Members With Traumatic Brain Injury
Noctem, LLC
- Location
- San Diego, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
UCLA Magnesium Formulation Athlete Study
University of California, Los Angeles
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18–35
- RecruitingHealthy volunteers
UCLA REST Study (REsearch on Sleep Techniques)
University of California, Los Angeles
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18–22
- RecruitingHealthy volunteers
Pharmacokinetics, Pharmacodynamics, and Safety Profile of Understudied Drugs Administered to Children Per Standard of Care (POPS)
Duke University
- Location
- Palo Alto, CA + 3 other US sites
- Eligibility basics
- Ages 0 mo–20
- RecruitingHealthy volunteers
Body Clocks - Coordination of Peripheral and Central Oscillators
Stanford University
- Location
- Stanford, CA
- Eligibility basics
- Ages 18–30 · Women only
- RecruitingHealthy volunteers
Sleep TMS for Depression
Stanford University
- Location
- Stanford, CA
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
A Dyadic Sleep Health Approach for Persons With Alzheimer's Disease and Caregivers
University of California, Los Angeles
- Location
- La Jolla, CA + 2 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Comparing Two School-Based Sleep Health Interventions To Promote Sleep Quality in Youth
Children's Hospital Los Angeles
- Location
- Los Angeles, CA + 1 other US site
- Eligibility basics
- Ages 12–18
- RecruitingHealthy volunteers
Effect of Ashwagandha Root Extract on Stress, Anxiety, and Sleep Quality in Adults Experiencing Minority Stress
SF Research Institute, Inc.
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteers
Brief Behavioral Treatment for Insomnia in Veterans With Posttraumatic Stress Disorder
VA Office of Research and Development
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteersPhase 2
Sleep Health in U.S. Marines
San Diego State University
- Location
- San Diego, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Insomnia Treatment and Cardiometabolic Health in Older Adults With Posttraumatic Stress Disorder
University of California, Los Angeles
- Location
- North Hills, CA
- Eligibility basics
- Ages 50+
- RecruitingHealthy volunteersPhase 2
Trial of Suvorexant for Sleep in Children With Autism
Stanford University
- Location
- Stanford, CA
- Eligibility basics
- Ages 13–17
- RecruitingHealthy volunteers
Sleep Well Firefighters: An App-based Program to Improve Sleep, Cognition, and Behavioral Health in Firefighters
California Polytechnic State University-San Luis Obispo
- Location
- San Luis Obispo, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Testing the Effectiveness of an Intervention That Aligns Circadian Rhythm With Daily Activities on Student Flourishing
University of California, San Diego
- Location
- La Jolla, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
NIA_Improving Function and Well-being by Improving Patient Memory: Transdiagnostic Sleep and Circadian Treatment
University of California, Berkeley
- Location
- Berkeley, CA
- Eligibility basics
- Ages 50+
- RecruitingHealthy volunteers
Diagnosing Obstructive Sleep Apnea Using Electromyography of the Muscles of the Mouth
University of California, San Diego
- Location
- San Diego, CA
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteers
Research Framework Exploring Sleep Health
Scripps Translational Science Institute
- Location
- La Jolla, CA
- Eligibility basics
- Ages 18+
Who these studies look for
Sleep studies often ask about shift work, caffeine and alcohol use, and medicines that affect sleep. Overnight lab studies usually require you to keep a set sleep schedule beforehand.
Matching a page like this one never means you qualify. Each research team decides eligibility at screening.
Questions
Do sleep studies require staying overnight?
Not always. Some use a sleep lab, some use home monitoring. Where a record mentions an overnight or inpatient stay we flag it, but the site confirms the schedule.