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Cocaine (hydrochloride) powder shown with penny for scale. Cocaine is a powerfully addictive central nervous system stimulant that is snorted, injected, or smoked. Cocaine in its purest form is a white, pearly product. Cocaine appearing in powder form is a salt, typically cocaine hydrochloride. Street market cocaine is frequently adulterated or cut with various powdery fillers to increase its weight. Cocaine is a strong central nervous system stimulant that increases levels of dopamine, a brain chemical (or neurotransmitter) associated with pleasure and movement, in the brain's reward circuit. Cocaine usually makes the user feel euphoric and energetic, but also increases body temperature, blood pressure, and heart rate. Users risk heart attacks,.
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