Nicotine patches are adhesive patches that deliver a controlled amount of nicotine through the skin. They are commonly used as a part of smoking cessation programs to help individuals quit smoking by reducing withdrawal symptoms and cravings. The patches come in various strengths, allowing users to gradually decrease their nicotine intake over time. To use a nicotine patch, it is applied to a clean, dry area of the skin, typically on the upper body or arm. Users typically wear the patch for 16 to 24 hours, depending on the product instructions. Side effects may include skin irritation, sleep disturbances, or dizziness.