Nicotine replacement therapies (NRT) are products designed to help people quit smoking by providing a controlled dose of nicotine without the harmful chemicals found in cigarettes. Common forms of NRT include nicotine gum, patches, lozenges, inhalers, and nasal sprays. These products work by reducing withdrawal symptoms and cravings, making it easier for individuals to stop smoking. NRT is often recommended as part of a comprehensive quit plan that may include counseling and support. While NRT can be effective, it is important for users to follow guidelines and consult healthcare professionals to ensure safe and appropriate use.