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Amphetamine [note 2] (contracted from alpha-methylphenethylamine) is a central nervous system (CNS) stimulant that is used in the treatment of attention deficit hyperactivity disorder (ADHD), narcolepsy, and obesity; it is also used to treat binge eating disorder in the form of its inactive prodrug lisdexamfetamine.
Amphetamine type stimulants can be used in the treatment of narcolepsy, a rare neurological disorder where the brain is unable to regulate the sleep-wake mechanism. [17] Amphetamines causes an increase in dopamine release, which is the proposed mechanism for its wake-promoting effect. [18]
MDA is a substituted methylenedioxylated phenethylamine and amphetamine derivative. In relation to other phenethylamines and amphetamines, it is the 3,4-methylenedioxy, α-methyl derivative of β-phenylethylamine, the 3,4-methylenedioxy derivative of amphetamine, and the N-desmethyl derivative of MDMA.
Long-term amphetamine exposure at sufficiently high doses in some animal species is known to produce abnormal dopamine system development or nerve damage, [40] [41] but, in humans with ADHD, long-term use of pharmaceutical amphetamines at therapeutic doses appears to improve brain development and nerve growth.
When substituted amphetamines are used, drug tolerance develops rapidly. [8] Amphetamine dependence has shown to have the highest remission rate compared to cannabis, cocaine, and opioids. [9] Severe withdrawal associated with dependence from recreational substituted amphetamine use can be difficult for a user to cope with.
Drugs in the class of amphetamines, or substituted amphetamines, are known to induce "amphetamine psychosis" typically when chronically abused or used in high doses. [7] In an Australian study of 309 active methamphetamine users, 18% had experienced a clinical level psychosis in the past year. [ 8 ]
Stimulant use disorder is a type of substance use disorder where the use of stimulants caused clinically significant impairment or distress. It is defined in the DSM-5 as "the continued use of amphetamine-type substances, cocaine, or other stimulants leading to clinically significant impairment or distress, from mild to severe". [1]
Amphetamine and methamphetamine are central nervous system stimulants used to treat a variety of conditions. When used recreationally, they are colloquially known as "speed" or sometimes "crank". [1] Amphetamine was first synthesized in 1887 in Germany by Romanian chemist Lazăr Edeleanu, who named it phenylisopropylamine.