Atomoxetine

Atomoxetine, sold under the brand name Strattera, is a medication used to treat attention deficit hyperactivity disorder (ADHD) and, to a lesser extent, cognitive disengagement syndrome. It may be used alone or along with psychostimulants. It is also used as a cognitive and executive functioning enhancer to improve self-motivation, persistence, attention, inhibition, and working memory. Use of atomoxetine is only recommended for those who are at least six years old. It is taken orally. Atomoxetine is a selective norepinephrine reuptake inhibitor and is believed to work by increasing norepinephrine and dopamine levels in the brain. The effectiveness of atomoxetine is comparable to the commonly prescribed stimulant medication methylphenidate.

Atomoxetine
Clinical data
Trade namesStrattera, others
Other names(R)-N-Methyl-3-phenyl-3-(o-tolyloxy)propan-1-amine
AHFS/Drugs.comMonograph
MedlinePlusa603013
License data
Pregnancy
category
  • AU: B3
Routes of
administration
By mouth
Drug classSelective norepinephrine reuptake inhibitor
ATC code
Legal status
Legal status
  • AU: S4 (Prescription only)
  • BR: Class C1 (Other controlled substances)
  • CA: ℞-only
  • UK: POM (Prescription only)
  • US: WARNINGRx-only
  • EU: Rx-only
Pharmacokinetic data
Bioavailability63 to 94%
Protein binding98%
MetabolismLiver, via CYP2D6
Elimination half-life4.5–25 hours
ExcretionKidney (80%) and faecal (17%)
Identifiers
  • (3R)-N-Methyl-3-(2-methylphenoxy)-3-phenylpropan-1-amine
CAS Number
PubChem CID
IUPHAR/BPS
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard100.120.306
Chemical and physical data
FormulaC17H21NO
Molar mass255.361 g·mol−1
3D model (JSmol)
SMILES
  • CC1=C(C=CC=C1)O[C@H](CCNC)C2=CC=CC=C2
  • InChI=1S/C17H21NO/c1-14-8-6-7-11-16(14)19-17(12-13-18-2)15-9-4-3-5-10-15/h3-11,17-18H,12-13H2,1-2H3/t17-/m1/s1 Y
  • Key:VHGCDTVCOLNTBX-QGZVFWFLSA-N Y
 NY (what is this?)  (verify)

Common side effects of atomoxetine include abdominal pain, loss of appetite, nausea, feeling tired, and dizziness. Serious side effects may include angioedema, liver problems, stroke, psychosis, heart problems, suicide, and aggression. There is a lack of data regarding its safety during pregnancy; as of 2019, its safety during pregnancy and for use during breastfeeding is not certain.

It was approved for medical use in the United States in 2002. In 2021, it was the 219th most commonly prescribed medication in the United States, with more than 1.9 million prescriptions.

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