Kirkland Signature Original Flavor Uncoated Nicotine Polacrilex Gum is part of a Nicotine Replacement Therapy. Nicotine Replacement Therapy (NRT) is designed to wean your body off cigarettes. It helps regulate, control and gradually reduce your body's cravings for nicotine. Smoking is addictive in two ways. Your need for nicotine is both physical and mental. You must overcome both addictions to stop smoking. Nicotine replacement therapy (NRT) only deals with the physical dependence. It is not meant to be the only thing you use to help you quit smoking. You will need other methods that help the psychological (emotional and mental) part of smoking, such as a stop smoking program.