Nicotine

Nicotine is a highly addictive stimulant found in tobacco. This drug is quickly absorbed into the bloodstream when smoked.

How it’s used: Nicotine is typically smoked in cigarettes or cigars. Some people put a pinch of tobacco (called chewing or smokeless tobacco) into their mouths and absorb nicotine through the lining of their mouths.

Effects & Dangers:

  • Physical effects include rapid heartbeat, increased blood pressure, shortness of breath, and a greater likelihood of colds and flu.


  • Nicotine users have an increased risk for lung and heart disease and stroke. Smokers also have bad breath and yellowed teeth. Chewing tobacco users may suffer from cancers of the mouth and neck.


  • Withdrawal symptoms include anxiety, anger, restlessness, and insomnia.

Addictiveness: Nicotine is as addictive as heroin or cocaine, which makes it extremely difficult to quit. Those who start smoking before the age of 21 have the hardest time breaking the habit.