[null and void]

E-cigarettes do not necessarily use tobacco.

Nicotine is also extracted from potato and tomato leaves.

[VitacoreVision]

E-cigarette juice makers explicitly try to use non-tobacco sources to extract nicotine because of how over-regulated the tobacco industry is. Non-tobacco nicotine is much cheaper.

Article: "According to FDA Commissioner Dr. Stephen Ostroff, the FDA is looking to enact a 'deeming rule' that would expand the agency’s regulation of tobacco to include e-cigarettes, which do not use tobacco."