The Habitrol® patch is a nicotine transdermal system skin patch containing nicotine, the addictive agent in cigarettes and other tobacco products. Habitrol® Nicotine Transdermal System Patches use time released technology for sustained delivery of nicotine for effective, long lasting, craving reduction. When you wear the patch, it gradually releases nicotine into your bloodstream through the skin. The Habitrol nicotine patch works by replacing some of the nicotine which your body has become accustomed to from smoking, therefore reducing the nicotine withdrawal symptoms many people normally feel when they stop smoking. Your own chances of quitting depend on how strongly you are addicted to nicotine, how motivated you are to quit smoking, and how closely you follow a quit program plan.