Methamphetamine or (N-methylamphetamine) also is popularly known as (Crystal Meth) is a powerful, highly addictive stimulant drug that affects the central nervous system. Crystal meth is a form of the drug that looks like glass fragments or shiny, bluish-white rocks. It is chemically similar to amphetamine, a drug used to treat attention-deficit hyperactivity disorder (ADHD) and narcolepsy, a sleep disorder. Crystal Meth online

Other common names for methamphetamine include blue, crystal, ice, meth, and speed.
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