One of the top three questions asked is “what’s in it?” when it comes to e-liquid. It has been next to impossible to de-couple nicotine from cigarettes in people’s minds. The nicotine used in the fluid for vaping is pharmaceutical grade liquid nicotine that comes from a precise process. Yes, tobacco plants yield the highest amount of nicotine per tonnage, but they are not the only plant that contains it.
Plants from the Nightshade[Solanaceae] family:
It is my understanding that ALL of the pharmaceutical grade nicotine is processed overseas. Every lozenge, patch, inhaler, nasal spray and gum uses this same liquid nicotine.
Here is a video of a large industrial company in Italy manufacturing it: