Where does the Nicotine come from?
Nicotine doses in the cartridges are rated in low, medium, high, and zero nicotine. The high strength cartridge has the nicotine equivalent of a regular cigarette, though some have been known to exceed that, which we do not recommended for your health safety. In some brands of the device, such as BestEciggy it is even possible to create your own custom flavors and regulate the nicotine level yourself.