@Jom "25mg of nicotine could kill a small woman and would probably kill a child.The average nicotine content of a cigarette is about 10mg. Larger and stronger cigarettes would easily contain a lethal amount"
Ermm, not quite. LD50 of Nicotine, which is a potent poison, is actually between 30-60 mg/Kg of bodyweight. The average nicotine content for your standard cigarette is indeed 10mg,, so with your average adult european weighing in at around 70Kg, you would need to be smoking roughly 200 cigs or so a day to get close to the LD50.