This is a pilot randomized controlled trial (RCT) with the overarching aim of testing the
influence of reducing electronic nicotine delivery system (ENDS) use or nicotine on addiction
and combustible cigarette (CC) smoking among dual users. Specifically, the investigators will
conduct a 4-week pilot RCT in which dual users who are not motivated to quit either product
in the near future are randomized to A) abruptly switch to low nicotine ENDS pods, B)
abruptly reduce number of usual nicotine ENDS pods, or C) use ENDS as usual (control). The
investigators adapted a protocol used in a prior study to assign participants to switch to
ENDS pods with less nicotine or reduce number of ENDS pods in this trial. Specifically, the
investigators will provide all participants with ENDS pods during the study period and
instruct them to only use ENDS provided by the study. Participants in reduced nicotine
condition will switch from usual nicotine (5% JUUL) to low nicotine ENDS (3% nicotine JUUL)
pods. Participants in the reduced use condition will continue to use usual nicotine ENDS (5%
nicotine JUUL) pods but reduce use to 60% of their baseline number of pods per week.
Participants in the control condition will use usual nicotine ENDS (5% nicotine JUUL) pods as
usual.