Κόκας (Cocaine) is a powerful stimulant drug derived from the leaves of the coca plant, primarily found in South America. It is known for its ability to increase energy, alertness, and feelings of euphoria. Cocaine can be processed into a white powder or a solid crystal known as crack cocaine, which is smoked for a more intense effect. The use of cocaine carries significant health risks, including addiction, heart problems, and mental health issues. It is classified as a Schedule II drug in many countries, meaning it has a high potential for abuse but can be prescribed for certain medical conditions, such as local anesthesia in some surgical procedures.