What are the effects of methamphetamine?
Like amphetamine, it causes increased activity, decreased appetite, and a general sense of well-being. The effects of methamphetamine can last 6 to 8 hours. After the initial “rush,” there is typically a state of high agitation that in some individuals can lead to violent behavior. As a powerful stimulant, methamphetamine, even in small doses, can increase wakefulness and physical activity and decrease appetite. Those who smoke or inject methamphetamine report a brief, intense sensation, or rush. Oral ingestion or snorting produces a long lasting high instead of a rush, which reportedly can continue for as long as half a day.