Principal Investigator(s): Babita Das and Olga Rass
Funding Mechanism: Research Contract
ID number: HHSF223201710040I
Award Date: 9/13/2018
Studies reveal that large differences (>100%) in nicotine content affect the abuse liability of e-liquids, but more information demonstrating how smaller differences in nicotine affect abuse liability of electronic nicotine delivery systems (ENDS) would be useful. The goal of this study is to determine how modest differences (e.g., ±20%) in e-liquid nicotine concentration affect the abuse liability of ENDS. Following an initial laboratory phase where study e-liquids/aerosol and participants’ own brands of e-liquids will be chemically characterized, 30 adult current ENDS users will participate in five ad libitum vaping sessions where they will use five e-liquids, each containing a different nicotine concentration. Measures of abuse liability will include pharmacokinetic and pharmacodynamic data, biomarkers of nicotine exposure, puff topography, and subjective measures of craving, withdrawal, liking, and reinforcement. Findings may inform regulatory standards for tobacco products.