Habitrol Lozenge is a quit smoking aid that replaces the nicotine in a cigarette. It is used when you feel the urge to smoke and can help relieve your withdrawal symptoms. Habitrol Lozenge is one of several types of NRT such as gum and patches. They can be used together using Combination Therapy, or they can be used alone. There are two dosages, one flavor, and two boxes sizes available.