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Cannabis clinical trials in California
8 studies for Cannabis are looking for participants at sites in California.
Cities in California
High Potency Cannabis: Acute and Protracted Effects
- UCLA Center for Cannabis and Cannabinoids, Los Angeles
RecruitingPhase 1Healthy volunteers welcome
Ages 21 to 55 · All sexes · Updated Sep 4, 2026 · NCT06859723Brain Mechanisms Supporting Cannabis-induced Pain Relief
- Center for Functional MRI - W.M.Keck Building, La Jolla
RecruitingEarly phase 1Healthy volunteers welcome
Ages 21 to 65 · All sexes · Updated Jun 3, 2026 · NCT04982965Effects of Cannabidiol and Tetrahydrocannabinol on Microbiome and Neuroinflammation in HIV
- HIV Neurobehavioral Research Program (HNRP), San Diego
RecruitingPhase 2Healthy volunteers welcome
Ages 21 to 70 · All sexes · Updated May 1, 2026 · NCT05514899Cannabis Use, Cognition, and the Endocannabinoid System in HIV
- UC San Diego Medical Center-Hillcrest, San Diego
RecruitingEarly phase 1Healthy volunteers welcome
Ages 18 to 65 · All sexes · Updated May 1, 2026 · NCT04883255Understanding the Clinical Pharmacology of Marijuana-Tobacco Co-administration
- Zuckerberg San Francisco General Hospital, San Francisco
RecruitingPhase 2Healthy volunteers welcome
Ages 21 to 65 · All sexes · Updated Jan 7, 2026 · NCT05999383Age-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 · NCT06859710The Effects and Mechanisms of a High CBD Cannabis Extract (BRC-002) for the Treatment of Pain and Health in Complex Regional Pain Syndrome
- Altman Clinical and Translational Research Institute, La Jolla
- University of California, San Diego, San Diego
RecruitingPhase 1
Ages 21 to 75 · All sexes · Updated Jun 7, 2024 · NCT06393101From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.