how toxic nicotine
If you guessed # 3, you are correct. The lethal dosage for a 150 pound adult is 60 mg. The lethal dosage for # 2 is 75 mg and the lethal dosage for # 1 is 200 mg. In other words, nicotine is three times as toxic as arsenic and one and one half times as toxic as strychnine. Nicotine - a poisonous volatile alkaloid, derived from tobacco and responsible for many of the effects of tobacco.