Cocaine :: essays research papers

Cocaine is a drug extracted from the leaves of the coca plant. It is a potent brain stimulant and one of the most powerfully addictive drugs. Cocaine is distributed on the street in two main forms: cocaine hydrochloride is a white crystalline powder that can be snorted or dissolved in water and injected; and "crack" is cocaine hydrochloride that has been processed with ammonia or sodium bicarbonate (baking soda) and water into a freebase cocaine. These chips, chunks, or rocks can be smoked. Cocaine may be used occasionally, daily, or in a variety of compulsive, repeated-use "binges". Regardless of how it is used, cocaine is highly addictive. Crack cocaine and injected cocaine reach the brain quickly and bring an intense and immediate high. Snorted cocaine produces a high more slowly. Cocaine can produce a surge in energy, a feeling of intense pleasure, and increased confidence. The effects of powder cocaine last about 20 minutes, while the effects of "crack" last about 12 minutes. Heavy use of cocaine may produce hallucinations, paranoia, aggression, insomnia, and depression. Cocaine's effects are short lived, and once the drug leaves the brain, the user experiences a "coke crash" that includes depression, irritability, and fatigue. Many people ask is cocaine addictive? Yes. Cocaine can take over your life and cause you to lose interest in everything else. Studies in monkeys have shown that animals will work very hard (press a bar over 10,000 times) for a single injection of cocaine, choose cocaine over food and water, and take cocaine even when this behavior is punished. Animals must have their access to cocaine limited in order not to take toxic or even lethal doses. People addicted to cocaine behave similarly. They will go to great lengths to get cocaine and continue to take it even when it hurts their school or job performance and their relationships with loved ones. Do users develop a tolerance to crack or cocaine? Yes. Users may find they need more and more of the drug to get high. What are the effects of cocaine use? Cocaine stimulates the central nervous system. It acts on the "pleasure centers" of the brain, producing heightened pleasure and increased confidence. Other immediate effects include dilated pupils and elevated blood pressure, heart rate, respiratory rate, and body temperature. The pleasurable effects of powder cocaine last about 20 minutes. Occasional use can cause a stuffy or runny nose, and chronic use can ulcerate the mucous membrane of the nose. Injecting cocaine with contaminated equipment can cause AIDS, hepatitis, and other diseases. Preparation of freebase cocaine, which involves the use of volatile solvents, can result in death or injury from fire or explosion.