Cocaine produces a range of physiological effects by stimulating the central nervous system. It increases levels of the neurotransmitter norepinephrine, leading to constricted blood vessels, elevated heart rate, increased blood pressure, and heightened alertness. Cocaine also affects dopamine levels, which are linked to intense feelings of well-being and euphoria. Users may also experience dilated pupils, reduced appetite, and increased body temperature. At higher doses or with repeated use, cocaine can lead to serious complications, including irregular heart rhythms, heart attack, stroke, and seizures.
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