Coca leaves come from the coca plant, primarily found in the Andes Mountains of South America. These leaves have been used for centuries by indigenous peoples for their stimulant properties, helping to reduce fatigue and hunger. Chewing coca leaves or brewing them into tea is a traditional practice in countries like Peru and Bolivia. The leaves contain alkaloids, including cocaine, which can be extracted and processed into a powerful stimulant. While coca leaves themselves are legal in some regions for traditional use, the production and distribution of cocaine is illegal in many parts of the world due to its potential for abuse and addiction.