Amphetamine
CNS stimulant used for ADHD, narcolepsy, and binge eating disorder.
Amphetamine is a central nervous system (CNS) stimulant discovered as a chemical in 1887 by Lazăr Edeleanu and later developed as a drug in the late 1920s. It is used medically to treat attention deficit hyperactivity disorder (ADHD), narcolepsy, and binge eating disorder (in the form of lisdexamfetamine), and has historical use for nasal congestion and depression. It is also used as an athletic and cognitive enhancer and recreationally as an aphrodisiac and euphoriant, with significant health risks at high doses.
Quick Facts
- Watchedfields
- correct
- Verifiedrevid
- 851154960r
- Inn
- Amfetamine
- Medlineplus
- a616004
- Dailymedid
- Amphetamine
- Drugs.Com
- monograph · amphetamine-sulfate
- Dependency Liability
- Physical: None / Psychological: Moderate
- Addiction Liability
- Moderate
- Routes Of Administration
- Medical: Oral / Recreational: Oral, insufflation, rectal, intramuscular, intravenous
- Class
- Stimulant; anorectic; norepinephrine-dopamine releasing agent
- Atc Prefix
- N06
- Atc Suffix
- BA01
Facts from the source article.
Lore & Background
Amphetamine was first synthesized as a chemical in 1887 by Lazăr Edeleanu, but its pharmacological properties were not recognized until the late 1920s. The first amphetamine pharmaceutical was Benzedrine. It exists as two enantiomers: levoamphetamine and dextroamphetamine. Pharmaceutical amphetamine is prescribed as racemic amphetamine, Adderall, dextroamphetamine, or lisdexamfetamine. It increases monoamine and excitatory neurotransmission in the brain, with most pronounced effects on norepinephrine and dopamine systems.
Reader's Guide
Amphetamine's significance lies in its widespread medical use for ADHD, narcolepsy, and binge eating disorder, as well as its historical role in treating nasal congestion and depression. At therapeutic doses, it improves cognitive control, wakefulness, reaction time, and fatigue resistance, while reducing appetite. Long-term use at therapeutic doses in ADHD appears to improve brain development and nerve growth, and reduces the risk of developing a substance use disorder as an adult. However, recreational use at high doses carries serious risks including addiction, psychosis, and rapid muscle breakdown. Amphetamine is the parent compound of the substituted amphetamines class, which includes substances such as bupropion, cathinone, MDMA, and methamphetamine. It is chemically related to the naturally occurring trace amines phenethylamine and N-methylphenethylamine.
Discovery & Chemical Lineage
Amphetamine's story begins in 1887 when Romanian chemist Lazăr Edeleanu first identified the compound as a chemical substance. It would take another four decades before the molecule was recognized as a pharmacologically active drug in the late 1920s, eventually reaching the market under the brand name Benzedrine. Chemically, amphetamine sits within the phenethylamine family and serves as the foundational structure for the entire class of substituted amphetamines, a group that encompasses bupropion, cathinone, MDMA, and methamphetamine. The molecule exists as two mirror-image forms, or enantiomers: levoamphetamine and dextroamphetamine. Pharmaceutical preparations come in several forms, including racemic amphetamine, Adderall, dextroamphetamine, and the prodrug lisdexamfetamine. Amphetamine is also chemically linked to naturally occurring trace amine neuromodulators in the human body—phenethylamine, which is its direct parent compound, and N-methylphenethylamine, a positional isomer that differs from amphetamine only in where its methyl group is placed.
Medical Applications & the ADHD Evidence Base
Amphetamine's primary modern medical roles center on treating attention deficit hyperactivity disorder and narcolepsy, while its prodrug form lisdexamfetamine is indicated for binge eating disorder. Historically, it was also deployed against nasal congestion and depression, and some clinicians still prescribe it off-label for chronic pain and mood disorders. The evidence base for ADHD treatment is particularly robust. Reviews of MRI studies indicate that long-term amphetamine use in ADHD patients actually reduces structural and functional brain abnormalities, with notable improvements in regions like the right caudate nucleus. Randomized controlled trials spanning two years have confirmed both safety and sustained effectiveness. A 2025 meta-analysis of 113 trials found stimulant medications to be the only intervention with robust short-term efficacy, while also showing lower discontinuation rates than non-stimulant alternatives. Approximately 80% of stimulant users report meaningful symptom improvement, and children on these medications tend to show better peer relationships, stronger academic performance, and reduced impulsivity.
How It Works in the Brain
As a central nervous system stimulant, amphetamine amplifies monoamine and excitatory neurotransmission, with its most powerful effects concentrated on the norepinephrine and dopamine pathways. In the context of ADHD, this mechanism directly addresses the underlying neurochemical deficits: impaired dopamine signaling in the mesocorticolimbic projection and weakened norepinephrine transmission from the locus coeruleus to the prefrontal cortex. At therapeutic doses, the drug produces a constellation of effects—heightened wakefulness, improved cognitive control, euphoria, altered sexual desire, faster reaction times, fatigue resistance, suppressed appetite, elevated heart rate, and increased muscle strength. However, the dose-response relationship is critical. Larger doses can paradoxically impair cognitive function and trigger rapid muscle breakdown, while very high doses carry the risk of psychosis. Addiction is a genuine concern with heavy recreational use, though it is unlikely to develop from long-term medical use at prescribed therapeutic levels.
Regulation, Risk & the Recreational Divide
Amphetamine occupies a complex regulatory position worldwide. It is a prescription medication in many countries, yet unauthorized possession and distribution are subject to stringent legal controls, reflecting the serious health dangers tied to recreational use. The distinction between therapeutic and recreational dosing is stark: recreational doses are generally far larger than prescribed amounts and carry a dramatically elevated risk of serious adverse effects. While therapeutic use is associated with manageable side effects and low addiction potential, heavy recreational use introduces substantial risks including psychosis, rapid muscle breakdown, and cognitive deterioration. Amphetamine is also used as an athletic performance enhancer and cognitive booster, and recreationally as an aphrodisiac and euphoriant—contexts that push the drug well beyond its intended medical parameters. The Cochrane reviews note that stimulant medications, including amphetamines, do carry higher discontinuation rates than non-stimulant options due to adverse side effects, a trade-off that underscores the need for careful medical supervision.
Frequently Asked Questions
Who is credited with discovering amphetamine?
Romanian chemist Lazăr Edeleanu first synthesized the compound back in 1887, but it wasn't until the late 1920s that researchers actually developed it into a usable pharmaceutical product.
What is amphetamine's primary role in medicine?
It acts as a central nervous system stimulant, most commonly prescribed to help manage ADHD, narcolepsy, and binge eating disorder.
What are the common forms or 'aliases' fans should know?
The molecule shows up in several guises, including racemic amphetamine, dextroamphetamine, the well-known brand Adderall, and the prodrug lisdexamfetamine.
Why is amphetamine historically significant beyond psychiatry?
Early on it was trialed for nasal congestion and depressive episodes, and it later became a widely recognized performance enhancer in both athletic and cognitive settings.
What are the main risks fans should be aware of?
At elevated doses the compound poses serious physical and psychological dangers, and its recreational use as a euphoriant or aphrodisiac is linked to significant health harm.
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