Methamphetamine, a central stimulant belonging to the sympathomimetic neurotransmitters. Because of its raw material appearance of pure white crystals, crystal clear, and its intense toxicity, people prefer to call it methamphetamine. The drug has a transient euphoric, anti-fatigue effect in small doses, and because amphetamine has its transliteration name of amphetamine or amphetamine, methamphetamine also has the name of methamphetamine. In addition, methamphetamine is in the ephedrine chemical structure based on the transformation, so it is also known as methamphetamine. Methamphetamine is used medicinally as a tablet, mostly as a powder when used as a drug, but also as a liquid and pill, can be antagonized by beta-blockers, such as propranolol hydrochloride, metoprolol tartrate, carvedilol, labetalol, etc. can inhibit the effects of methamphetamine and make it detoxified.