U.S. smokeless tobacco (SLT) health warnings are in text-only format, covering 30% of the primary surfaces of SLT containers.
We assessed exposure and response to SLT health warnings among current SLT users.
Of current SLT users, 77.5% reported exposure to SLT health warnings in the past 30 days.
Socio-demographic disparities existed in exposure and response to SLT warning labels.
Exposure was associated with perceptions of SLT harmfulness, but not perceptions of SLT addictiveness.