
Methamphetamine is a powerful drug. It acts by changing how the brain works. It also speeds up many functions in the body. Methamphetamine has a chemical structure that is similar to another drug called amphetamine. Methamphetamine can cause lots of harmful things including:
- inability to sleep
- paranoia
- aggressiveness
- hallucinations
If a person uses methamphetamine for a long time, they may become paranoid. They may also hear and see things that aren't there. These are called hallucinations. Because methamphetamine causes big increases in blood pressure, someone using it for a long time may also have permanent damage to blood vessels in the brain. This can lead to strokes caused by bleeding in the brain.
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