Amphetamines are non-catecholamine sympathomimetic amines with CNS stimulant activity. By mimicking the structures of the catecholamine neurotransmitters, noradrenaline and dopamine, amphetamines modulate monoamine release, reuptake, and signalling within the brain. Although "amphetamine" is used as a descriptor of its own structural class, amphetamine properly refers to a racemic free base composed of equal parts of its two optical antipodes: levo-amphetamine and dextro-amphetamine. Used in the past for the treatment of depression, stress, and for concentration improvement, it is currently available as a prescription drug for the treatment of attention hyperactivity disorder (ADHD), narcolepsy, and as an adjunct in the treatment of exogenous obesity. Amphetamine is also available in a mixed salt/mixed enantiomer form (Adderall), where d-amphetamine and l-amphetamine are available in a ratio of 3:1. It is also available in a prodrug form as lisdexamfetamine.
Amphetamine aspartate monohydrate
Act Amphetamine XR
Humans and other mammals
For treatment of Attention Deficit Disorder with Hyperactivity (ADDH), narcolepsy, and exogenous obesity as a short term (a few weeks) adjunct in a regimen of weight reduction based on caloric restriction for patients refractory to alternative therapy.
Mechanism of action
Amphetamines stimulate the release of norepinephrine from central adrenergic receptors. At higher dosages, they cause release of dopamine from the mesocorticolimbic system and the nigrostriatal dopamine systems. Amphetamine may also act as a direct agonist on central 5-HT receptors and may inhibit monoamine oxidase (MAO). In the periphery, amphetamines are believed to cause the release of noradrenaline by acting on the adrenergic nerve terminals and alpha- and beta-receptors. Modulation of serotonergic pathways may contribute to the calming affect. The drug interacts with VMAT enzymes to enhance release of DA and 5-HT from vesicles. It may also directly cause the reversal of DAT and SERT.
Route of administration
Adrenergic Uptake Inhibitors
Central Nervous System Agents
Central Nervous System Stimulants
Centrally Acting Sympathomimetics
Chemical Actions and Uses
Cytochrome P-450 CYP2A6 Inhibitors
Cytochrome P-450 CYP2D6 Inhibitors
Cytochrome P-450 CYP2D6 Substrates
Dopamine Uptake Inhibitors
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Monoamine Oxidase Inhibitors Inhibitors
Neurotransmitter Uptake Inhibitors
Peripheral Nervous System Agents
Physiological Effects of Drugs
Psychostimulants, Agents Used for Adhd and Nootropics
Drug Info/Drug Targets: DrugBank 3.0: a comprehensive resource for 'omics' research on drugs. Knox C, Law V, Jewison
T, Liu P, Ly S, Frolkis A, Pon A, Banco K, Mak C, Neveu V, Djoumbou Y, Eisner R, Guo AC, Wishart DS.
Nucleic Acids Res. 2011 Jan; 39 (Database issue):D1035-41. | PMID:21059682