Cocaine is a powerful stimulant drug derived from the leaves of the coca plant (Erythroxylum coca). It affects the central nervous system by increasing levels of neurotransmitters such as dopamine, leading to heightened alertness, energy, and feelings of euphoria. Medically, it has limited use as a local anesthetic, but it is more commonly encountered as an illicit drug. Cocaine use carries significant risks, including addiction, cardiovascular problems, and overdose, making it a major public health concern.
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