These are leaves of tobacco, which are processed first so that they stay crisp
of Health and Human Services Food and Drug Admin., 113th Cong., Report to Congress: Innovative Products and Treatments to Achieve Abstinence from Tobacco Use, Reductions in Consumption of Tobacco, and Reductions in the Harm Associated with Continued Use, at 7 (Apr
"If [CVS] can be perceived as a place to go to receive health care, and buy health care products, as opposed to the place to go to buy a bottle of whiskey or get your film developed, then they can capture more of the retail medicine dollars," Skip Snow, a health care analyst at Forrester Research, told The New York Times
Community health workers used to intervening with substance use disorder patients can prioritize people at risk of serious harm or death from alcohol
The reason for preferring vaping to gums is that chewing is not always desirable and appropriate while vaping resembles the process of smoking