All types of cigarettes have nicotine in them and it is the area that makes people addicted to cigarettes.
The active ingredient is nicotine.
Please note that both tobacco (which contains nicotine and other substances) and nicotine are dangerous substances - whether smoked or used in some other form. Tobacco is often smoked. Sometimes it is chewed as well.
Obviously nicotine which is what addicts you to smoking
Nicotine
There are no harmful substances in the E-cigarettes, however 'Nicotine' is still present.
NICOTINE, TAR, CO2
It contains mainly nicotine and fludroxycortide.
Nicotine
NO.
Chemical Receptors
there are only three: > Nicotine; > Tar; and > Carbon monoxide
tar , nicotine , carbon monoxide