Nicotine replacement (NRT), bupropion (Zyban), and varenicline (Chantix) each work in different ways, but they all lessen the severity of cravings and withdrawal symptoms, and can make it two to three times more likely that you’ll successfully quit smoking. These medications make your day-to-day life more manageable, so you can handle things better while you’re quitting.
Medical review: Nathan Cobb, MD, November 6, 2017