Habitrol Gum helps you give up smoking by alleviating the unpleasant symptoms associated with nicotine withdrawal. These symptoms can include headaches, sweating, irritability, anxiety and mood swings. They are often a disincentive to quit smoking. When you chew Habitrol Gum, small amounts of nicotine become released and are absorbed through the lining of the mouth. This provides the smoker, a controlled way to satisfy the body's craving for nicotine.