Methamphetamine is a drug that strongly activates certain systems in the brain. It is closely related chemically to amphetamine , but the central nervous system effects of methamphetamine are greater. Both drugs have some medical uses, primarily in the treatment of obesity , but their therapeutic use is limited. Other CNS effects include irritability, insomnia , confusion, tremors , convulsions , anxiety, paranoia, and aggressiveness. Hyperthermia and convulsions can result in death.
Ice is clear chunky crystals that resemble ice.
All forms of methamphetamine are extremely dangerous and induce long-lasting, debilitating effects. Methamphetamine has a high potential for abuse and dependence. Side effects of methamphetamine use include irritability , nervousness , insomnia, nausea , hot flashes , dryness of the mouth, sweating, palpitations , and hypertension . Excessive doses can produce mental confusion , severe anxiety , and paranoia . Continued moderate to chronic use may lead to physical dependence and even death.