Methamphetamines are powerful addictive stimulants that affect the central nervous system. Common names for methamphetamine include meth, crystal, ice, and chalk, along with many others. In appearance it resembles a white powder that has no color, is bitter-tasting, and will dissolve easily in water.
Methamphetamine was originally developed in the early 20th century from amphetamine and was used in bronchial inhalers and nasal decongestants. If used, you will see an increase in activity, talkativeness, a pleasurable sense of well-being, and a decrease in appetite. Since greater amounts of methamphetamine get into the brain and can have longer-lasting, harmful effects to the central nervous system, it is a more potent stimulant than amphetamine. Due to this list of highly potential side effects, methamphetamine has a higher potential for widespread abuse.
Methamphetamine can be prescribed for attention deficit hyperactivity disorder (ADHD) as part of a short term weight loss regime, or even narcolepsy. However, the dosage prescribed is a far lower amount than used by a typical abuser. The U.S. Drug Enforcement Administration has listed it as a Schedule II stimulant, which means that it is only available through a prescription. However, medical prescription of this drug is rare since there are more effective drugs to use for ADHD and weight loss.