Narcotic drugs are substances that can relieve pain and induce sleep. They work by affecting the brain's receptors, which can lead to feelings of euphoria or relaxation. Common examples include morphine, codeine, and oxycodone. While they are often prescribed for medical purposes, such as managing severe pain, they can also be misused. The misuse of narcotic drugs can lead to addiction and other serious health issues. When taken inappropriately, they can cause respiratory depression, overdose, and even death. It is important for individuals to use these medications only as directed by a healthcare professional to minimize risks.