How much Nicotine can a human Ingest?

Question

I was curiouse out of a random ADD moment today when my dad was smoking, how much Nicotine is safe for a human to Ingest? I know 1 drop of pure nicotine can kill someone, so how much is safe, just to get someone addicted?

Answer 1

0.5-1.0 mg/kg can be fatal in humans.

http://en.wikipedia.org/wiki/Nicotine

Answer 2

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