Assessing Comprehension and Perceptions of Modified-Risk Information for Snus Among Adult Current Cigarette Smokers, Former Tobacco Users, and Never Tobacco Users

•Comprehension and risk perceptions of modified-risk messages for snus were tested.•Modified-risk information communicated reduced risk of snus compared to cigarettes.•The modified-risk information was understood by majorities of respondents.•Most perceived snus to have considerable risk, although less risk than cigarettes.•Providing modified-risk information about snus could facilitate smokers switching.