Figure 4.
Mean (±SE) tobacco craving at steady-state medication levels prior to smoking after 3 hours of nicotine deprivation (2pm on laboratory days [Days 22, 32, and 41]).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.