Nicotine Polacrilex Chewing Gums is a medicine used to quit smoking by reducing the craving for a cigarette and the irritable feeling that occurs when you stop smoking. INicotine chewing gum is used to help people stop smoking cigarettes. Nicotine chewing gum should be used together with a smoking cessation program, which may include support groups, counseling, or specific behavioral change techniques. Nicotine gum is in a class of medications called smoking cessation aids. It works by providing nicotine to your body to decrease the withdrawal symptoms experienced when smoking is stopped and as a substitute oral activity to reduce the urge to smoke.