Nicotine is deadly in high doses, and a "high dose" of nicotine is pretty small. If you extracted all the nicotine from an average cigarette and took it intrave

Nicotine is deadly in high doses, and a "high dose" of nicotine is pretty small. If you extracted all the nicotine from an average cigarette and took it intravenously, I imagine that would be enough to kill an average person. But the dose makes the poison and nobody consumes nicotine in such high doses, and you can't accidentally overdose through any of the ways that people intentionally consume it, because it makes you extremely nauseous before it gets dangerous. I don't consume any nicotine containing products, though, and I have never had a nicotine addiction. That's just an assumption you jumped to.