Dependence is a physical change in how your body reacts to a substance. In this case, nicotine. Your body will also have a reaction when you stop using it. Nicotine can be found in tobacco products such as:

  • Cigarettes
  • Snuff
  • Chewing tobacco
  • Cigars
  • Pipes
Throat Cancer
Throat cancer
Copyright © Nucleus Medical Media, Inc.


Nicotine acts on the brain's chemistry. It creates feelings of pleasure. However, the effects go away within a few minutes. Users will need to continue using nicotine to keep the good feelings going. This cycle can lead to addiction.

Risk Factors

Use of nicotine products is the main risk factor.

The risk of addiction increases with:

  • Family history or exposure to smoking
  • Depression
  • Victims of bullying


Symptoms only develop when nicotine is not being used. This is known as withdrawal. Symptoms of withdrawal include:

  • Irritability
  • Craving
  • Nervousness
  • Headache
  • Thinking and attention problems
  • Trouble sleeping
  • Increased appetite

Tobacco use is also associated with several serious health conditions such as:


Your doctor will ask about your symptoms, medical, and smoking history. A physical exam will be done.

A blood test can check cotinine level in your saliva or blood. This will show changes in nicotine use. The doctor may use it to check your progress.


Talk with your doctor about the best treatment plan for you. Treatment may involve one or more therapies. Options include:

Nicotine Replacement Therapy (NRT)

NRT relieves withdrawal symptoms. NRT products include:

  • Nicotine gum
  • Lozenges
  • Nasal sprays
  • Patches
  • Inhalers

The chance of becoming dependent on these products is low. NRT does not create the same "feel good" feelings as nicotine.

NRT may help you to:

  • Avoid smoking
  • Reduce the amount of tobacco you use
  • Quit and stay smoke-free

Electronic Cigarettes

Electronic cigarettes (e-cigarettes) turn liquid nicotine into a vapor. There is conflicting evidence on whether or not they may help you quit. In addition, the long-term effects of e-cigarette use are not known.

Behavioral Therapy

Behavioral therapies include:

  • Counseling
  • Group behavior therapy
  • Telephone quit lines, cell phone programs, and text messaging programs
  • Internet and computer-based programs
  • Self-help classes and manuals
  • Cognitive-behavioral therapy


Medicine that may help you quit include:

  • Antidepressants
  • Nicotine partial agonists—mimics effect of nicotine to ease withdrawal

Other medicine may help ease withdrawal symptoms. A third type may be used if you start smoking again. It blocks the pleasure feeling when you use nicotine.


The best prevention is to never use tobacco products. Try to avoid places where people are smoking as well.

Revision Information

  • Reviewer: EBSCO Medical Review Board Adrian Preda, MD
  • Review Date: 03/2018 -
  • Update Date: 07/12/2018 -