Young Adult Tobacco/Nicotine and Cannabis Co-Use

Inclusion Criteria

• * Between the ages of 18 and 25 years old * Must use at least one nicotine or tobacco product (nicotine vaping and/or cigarettes) on at least 20 out of the past 30 days for at least the past 3 months * Must express interest in nicotine cessation (all products) * Must submit a positive instant-read, oral fluid cotinine sample prior to enrollment * Must report use of cannabis on at least 10 out of the past 30 days * Must submit a positive drug screen for cannabinoids prior to enrollment * Must be able to provide informed consent

Exclusion Criteria

• * Any significant or acutely unstable medical, psychiatric, or substance use problem that would contraindicate research, interfere with safety, compromise data integrity, or preclude consistent study participation * Pregnant (self-report) or trying to become pregnant * Self-reported use of medications with smoking cessation efficacy * Immediate interest in cannabis cessation or treatment