Part two: an unblinded, parallel, randomized study to assess nicotine pharmacokinetics of four Vuse Solo ENDS flavors in smokers.

We report the findings from a randomized, parallel study designed to evaluate nicotine pharmacokinetics (PK) following 10 min of ad libitum use of electronic nicotine delivery system (ENDS) in four flavor variants. Subjects were randomized an investigational product (IP) and blood samples were collected for PK assessments during a test session. Primary endpoints were baseline-adjusted values of maximum plasma nicotine concentration (C) and area under the nicotine concentration-vs-time curve up to 60 min (AUC). Baseline-adjusted mean C ranged from 6.53 to 8.21 ng/mL, and mean AUC ranged from 206.87 to 263.52 ng min/mL for all ENDS IPs. Results of geometric mean C and AUC values were within 95% confidence intervals (CI) among the ENDS IP flavor variants tested.