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Cocaine

Cocaine

Cocaine is an alkaloid obtained from leaves of the coca plant and used medically as an anesthetic.  It is also widely abused as a drug.  Cocaine is classified as a narcotic for legal purposes by the United States government. It causes strong psychological dependence.  Cocaine hydrochloride, a water-soluble salt, is a dry white powder, known on the street as "snow" that is usually inhaled through a thin tube inserted into the nostril. More rarely, cocaine is injected into a vein. The drug may also be smoked in a purified form through a water pipe, or in a concentrated form "crack" shaped into pellets and placed in special smoking gear. Users experience euphoria, exhilaration, and a decreased appetite. The drug also increases heart rate, elevates blood pressure, and dilates the pupils. Chronic use can lead to skin abscesses, perforation of the septum of the nose, weight loss, and damage to the nervous system. Negative mental effects include extreme restlessness, anxiety, irritability, and, occasionally, paranoid psychosis. Death from even a small dose can occur, and is usually caused by seizures or heart attacks.
 	Native Americans of the Inca Empire chewed coca leaves, which caused mild euphoria, stimulation, and alertness.

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