Exploratory Study of Switching From Combustible Cigarettes to the BIDI E-cigarette

The BIDI will be dispensed, and subjects will be instructed to use the BIDI as often as they like during the 12 week period, and to switch completely to the BIDI within 1 week. If, however, they do smoke any CC, they will also be instructed to use the BIDI immediately before each CC to relieve their craving as much as possible before smoking their usual brand. The BIDI will also be the first product that they are instructed to use each morning. Smokers will be told to try to completely substitute BIDI for CCs by the end of the first week of use.