Smoking cessation medications include two categories: nicotine replacement therapy (NRT) and non-nicotine medications (NNM). 1.Nicotine replacement therapy (NRT) is a type of medication approved by the U.S. Food and Drug Administration (FDA) for smoking cessation. These medications replace some of the nicotine obtained from smoking and help manage the side effects of nicotine withdrawal.NRT is available in a variety of different dosage forms, such as nicotine chewable gum, nicotine inhalers, nicotine lozenges, nicotine nasal sprays, and nicotine patches. 2. Non-nicotine medications: These are medications that can be taken as pills; they do not contain nicotine, but can reduce cravings for smoking and minimize the side effects of nicotine withdrawal. These medications include varenicline, among others. If you need to use smoking cessation medication, please treat yourself with medication under the supervision of your doctor and not on your own.