Cocaine, also known as blow, rock, snow, and crack, is a drug made from the leaves of the coca plant. In the 1800s, it was used to treat some medical problems, such as fatigue and asthma. People began to realize the addictive and possibly deadly nature of this drug and made it illegal in the early 1900s. Learn more about the physical effects, social costs, and health risks related to this illegal drug. Book jacket.
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