Illicit drugs are substances that are illegal to produce, distribute, or use. These drugs can include a variety of substances, such as cocaine, heroin, and methamphetamine. They are often associated with serious health risks, addiction, and legal consequences. The production and sale of illicit drugs are typically controlled by criminal organizations. These drugs can have harmful effects on individuals and communities, leading to issues like drug trafficking, violence, and increased crime rates. Efforts to combat illicit drug use often involve law enforcement, education, and treatment programs.