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D-amphetamine

Dextroamphetamine
INN: Dexamfetamine
D-amphetamine.svg
Clinical data
Trade names Dexedrine, Metamina, Attentin, Zenzedi, Procentra, Amfexa
AHFS/Drugs.com Monograph
MedlinePlus a605027
License data
Pregnancy
category
  • AU: B3
  • US: C (Risk not ruled out)
Dependence
liability
Physical: None
Psychological: Moderate
Addiction
liability
Moderate
Routes of
administration
oral
ATC code
Legal status
Legal status
Pharmacokinetic data
Bioavailability Oral 75–100%
Protein binding 15–40%
Metabolism CYP2D6,DBH,FMO3
Onset of action IR dosing: 0.5-1.5 hours
XR dosing: 1.5–2 hours
Biological half-life 9–11 hours
pH-dependent: 8–31 hours
Duration of action IR dosing: 3–7 hours
XR dosing: 12 hours
Excretion Renal (45%); urinary pH-dependent
Identifiers
CAS Number
PubChem CID
IUPHAR/BPS
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
ECHA InfoCard 100.000.103
Chemical and physical data
Formula C9H13N
Molar mass 135.20622
3D model (Jmol)
Density 0.913 g/cm3
Boiling point 201.5 °C (394.7 °F)
Solubility in water 20 mg/mL (20 °C)
 NYesY (what is this?)  

Dextroamphetamine is a potent central nervous system (CNS) stimulant and amphetamine enantiomer that is prescribed for the treatment of attention deficit hyperactivity disorder (ADHD) and narcolepsy. It is also used as an athletic performance and cognitive enhancer, and recreationally as an aphrodisiac and euphoriant. Dextroamphetamine is also widely used by military air forces as a 'go-pill' during fatigue-inducing mission profiles such as night-time bombing missions. Preparations containing dextroamphetamine were also used in World War II as a treatment against fatigue.

The amphetamine molecule exists as two enantiomers (in other words, two different molecules that are mirror images of one another), levoamphetamine and dextroamphetamine. Dextroamphetamine is the more active dextrorotatory, or 'right-handed', enantiomer of the amphetamine molecule. Pharmaceutical dextroamphetamine sulfate is available as both a brand name and generic drug in a variety of dosage forms. Dextroamphetamine is sometimes prescribed as the inactive prodrug lisdexamfetamine dimesylate, which is converted into dextroamphetamine after absorption.

Dextroamphetamine, like other amphetamines, elicits its stimulating effects via several distinct actions: it inhibits or reverses the transporter proteins for the monoamine neurotransmitters (namely the serotonin, norepinephrine and dopamine transporters) either via trace amine-associated receptor 1 (TAAR1) or in a TAAR1 independent fashion when there are high cytosolic concentrations of the monoamine neurotransmitters and it releases these neurotransmitters from synaptic vesicles via vesicular monoamine transporter 2. It also shares many chemical and pharmacological properties with human trace amines, particularly phenethylamine and N-methylphenethylamine, the latter being an isomer of amphetamine produced within the human body.


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