This document provides an overview of cocaine, including its chemical properties, extraction process, methods of use, short-term and long-term effects, metabolism and testing. Cocaine is extracted from coca leaves and can be administered via smoking, injection or snorting. It acts as a stimulant initially but later depresses the nervous system. Short-term effects include increased heart rate and blood pressure. Long-term use can lead to heart disease, strokes and addiction. Cocaine is metabolized in the liver and detected through urine testing.