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Drug Use and Addiction clinical trials in California
21 studies for Drug Use and Addiction are looking for participants at sites in California.
Cities in California
Smoking Cessation CM for Veterans With or at Risk for Cancer
- San Francisco VA Medical Center, San Francisco, CA, San Francisco
RecruitingHealthy volunteers welcome
Ages 18 and older · All sexes · Updated Oct 2, 2026 · NCT06432985A SMART Evaluation of an Adaptive Web-based AUD Treatment for Service Members and Their Partners
- Stanford University, Palo Alto
RecruitingHealthy volunteers welcome
Ages 18 and older · All sexes · Updated Sep 21, 2026 · NCT05619185Ultrasound Neuromodulation of the Brain for Alcohol Use Disorder
- University of California, San Francisco, San Francisco
Recruiting
Ages 18 and older · All sexes · Updated Sep 11, 2026 · NCT06518785Evaluation of Oral THC and CBD in Men and Women
- University of California, Los Angeles, Los Angeles
RecruitingPhase 1Healthy volunteers welcome
Ages 21 to 55 · All sexes · Updated Sep 8, 2026 · NCT05067387Massed Prolonged Exposure for PTSD in Substance Use Treatment
- VA San Diego Healthcare System, San Diego
Recruiting
Ages 18 and older · All sexes · Updated Aug 27, 2026 · NCT06296186MDMA-Assisted Therapy for Veterans With Moderate to Severe Post Traumatic Stress Disorder
- VA Greater Los Angeles Healthcare System, Westwood campus, Los Angeles
- West Los Angeles Veteran Affairs, Los Angeles
RecruitingPhase 2
Ages 18 and older · All sexes · Updated Aug 19, 2026 · NCT05790239Contingency Management for Veteran Smokers Undergoing Major Elective Surgery
- San Francisco VA Health Care System, San Francisco
Recruiting
Ages 18 and older · All sexes · Updated Aug 11, 2026 · NCT06678672Multi-Site Trial of Tirzepatide for Smoking Cessation
- Keck School of Medicine, University of Southern California, Los Angeles
RecruitingPhase 2
Ages 21 to 65 · All sexes · Updated Jul 17, 2026 · NCT07602699Cultural Adaptation of Drug Treatment for DJJ Youth
- University of California, San Francisco, San Francisco
RecruitingHealthy volunteers welcome
Ages 13 to 17 · All sexes · Updated Jul 13, 2026 · NCT06003725Women Focused Encounters for Resilience Independence Strength and Eudaimonia
- UC San Diego AntiViral Research Center (AVRC), San Diego
RecruitingHealthy volunteers welcome
Ages 18 and older · Women · Updated May 1, 2026 · NCT06216600Auricular Acupuncture on Emotional Distress in Service Members and Veterans With PTSD
- David Grant USAF Medical Center, Fairfield
- Naval Medical Center San Diego, San Diego
Recruiting
Ages 18 to 65 · All sexes · Updated Apr 24, 2026 · NCT07021352California MEPS Hub
- CAL-PEP, Oakland
- Kindful Restoration, Riverside
- Starting Over, Inc, Riverside
RecruitingHealthy volunteers welcome
Ages 18 to 59 · Men · Updated Apr 3, 2026 · NCT07433985Optimizing Chronic Pain Care With Mindfulness and Chronic Pain Management Visits
- UCSD Health, La Jolla
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Feb 3, 2026 · NCT06387290Effectiveness of the SoundHeal Multi-Sensory Integrative Therapy Among Justice-Involved Youth
- San Luis Obispo County Juvenile Hall, San Luis Obispo
Recruiting
Ages 12 to 18 · All sexes · Updated Jan 23, 2026 · NCT07364799Age-dependent Effects of Smoked and Oral Delta-9-THC
- UCLA Center for Cannabis and Cannabinoids, Los Angeles
RecruitingPhase 1Healthy volunteers welcome
Ages 18 to 65 · All sexes · Updated Jan 7, 2026 · NCT05865470THC and CBD: A Controlled Human Study Probing a Harm Reduction Strategy
- UCLA Center for Cannabis and Cannabinoids, Los Angeles
RecruitingPhase 1Healthy volunteers welcome
Ages 21 to 55 · All sexes · Updated Dec 17, 2025 · NCT06859710OSA PAP Treatment for Veterans With SUD and PTSD on Residential Treatment Unit
- VA San Diego Healthcare System, San Diego, CA, San Diego
Recruiting
Ages 18 and older · All sexes · Updated Nov 3, 2025 · NCT05156112Individualized Adaptive Deep Brain Stimulation in Opioid Use Disorder
- University of California, San Francisco, San Francisco
Recruiting
Ages 22 to 75 · All sexes · Updated Oct 28, 2025 · NCT07214467An Evaluation of the Pink Cloud Application in Post- Treatment Substance Use Disorder Support
- Loyola Marymount, Los Angeles
RecruitingHealthy volunteers welcome
Ages 18 and older · All sexes · Updated Sep 11, 2025 · NCT07042451Families Left Behind
- San Diego County Medical Examiner Office, San Diego
Recruiting
Ages 18 and older · All sexes · Updated Aug 21, 2025 · NCT06854757A Comparative Effectiveness Study of PTSD Treatments Among Sexual and Gender Minority Populations
- Stanford University, Palo Alto
- UCSF Alliance Health Project, San Francisco
Recruiting
Ages 18 and older · All sexes · Updated Apr 24, 2025 · NCT06367764From ClinicalTrials.gov, data retrieved Oct 6, 2026. Each study sets its own eligibility; the study team decides who can join.