how much nicotine in cigarettes
Cigarettes contain anywhere from 8 mg of nicotine up to 20 mg of nicotine. Most cigarettes are at the lower end of the spectrum, which puts the average amount on nicotine in one cigarette at 12 mg. While the total amount of nicotine in a cigarette may vary, the amount that you actually absorb is relatively constant.
We know that when you smoke a cigarette you are absorbing about 1 mg of nicotine. If you smoke a half pack per day, your are taking in about 10 mg of nicotine per day. Pack per day smokers are taking in about 20 mg of nicotine per day. Those with a two-pack habit are taking in 40 mg per day and so on and so forth.