- Conditions
- Healthy, Caffeine, Adenosine, Dopamine D2/3 Receptor Availability
- Interventions
- Caffeine (200 mg), Placebo
- Drug
- Lead sponsor
- Hsiao-Ying Wey
- Other
- Eligibility
- 18 Years to 45 Years
- Enrollment
- 12 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2023 – 2026
- U.S. locations
- 1
- States / cities
- Charlestown, Massachusetts
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- Conditions
- Dopamine D2/3 Receptor Availability, Cognitive Function, Methamphetamine Abuse
- Interventions
- Varenicline, Placebo
- Drug · Other
- Lead sponsor
- University of California, Los Angeles
- Other
- Eligibility
- 18 Years to 60 Years
- Enrollment
- 62 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2023
- U.S. locations
- 1
- States / cities
- Los Angeles, California