Methamphetamine is a powerful and highly addictive central nervous system stimulant. It affects the brain by increasing the amount of dopamine, a neurotransmitter associated with pleasure and reward. This can lead to intense euphoria, increased energy, and heightened alertness, but it also comes with severe health risks and potential for addiction. Long-term use of methamphetamine can result in devastating physical and psychological effects, including severe dental problems, weight loss, and increased risk of infectious diseases. Treatment for methamphetamine addiction often requires comprehensive rehabilitation programs and support to help individuals recover and rebuild their lives.