Dexmethylphenidate

Dexmethylphenidate, sold under the brand name Focalin among others, is a potent central nervous system (CNS) stimulant used to treat attention deficit hyperactivity disorder (ADHD) in those over the age of five years. It is taken by mouth. The immediate release formulation lasts up to five hours while the extended release formulation lasts up to twelve hours. It is the more active enantiomer of methylphenidate.

Dexmethylphenidate
Clinical data
Trade namesFocalin, Focalin XR, others
Other namesd-threo-methylphenidate (D-TMP)
AHFS/Drugs.comMonograph
MedlinePlusa603014
License data
Dependence
liability
Physical: None; Psychological: High
Routes of
administration
By mouth
ATC code
Legal status
Legal status
Pharmacokinetic data
Bioavailability11–52%
Protein binding30%
MetabolismLiver
Elimination half-life4 hours
ExcretionKidney
Identifiers
  • (R,R)-(+)-Methyl 2-phenyl-2-(2-piperidyl)acetate
CAS Number
PubChem CID
IUPHAR/BPS
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
CompTox Dashboard (EPA)
Chemical and physical data
FormulaC14H19NO2
Molar mass233.311 g·mol−1
3D model (JSmol)
  • O=C([C@@H]([C@@H]1NCCCC1)C2=CC=CC=C2)OC

  • hydrochloride: Cl.[H][C@@](C(=O)OC)(C1=CC=CC=C1)[C@@]1([H])CCCCN1
  • InChI=1S/C14H19NO2/c1-17-14(16)13(11-7-3-2-4-8-11)12-9-5-6-10-15-12/h2-4,7-8,12-13,15H,5-6,9-10H2,1H3/t12-,13-/m1/s1 Y
  • Key:DUGOZIWVEXMGBE-CHWSQXEVSA-N Y

  • hydrochloride: InChI=1S/C14H19NO2.ClH/c1-17-14(16)13(11-7-3-2-4-8-11)12-9-5-6-10-15-12;/h2-4,7-8,12-13,15H,5-6,9-10H2,1H3;1H/t12-,13-;/m1./s1
  • Key:JUMYIBMBTDDLNG-OJERSXHUSA-N
 NY (what is this?)  (verify)

Common side effects include abdominal pain, loss of appetite, and fever. Serious side effects may include abuse, psychosis, sudden cardiac death, mania, anaphylaxis, seizures, and dangerously prolonged erection. Safety during pregnancy and breastfeeding is unclear. Dexmethylphenidate is a central nervous system (CNS) stimulant. How it works in ADHD is unclear.

Dexmethylphenidate was approved for medical use in the United States in 2001. It is available as a generic medication. In 2021, it was the 121st most commonly prescribed medication in the United States, with more than 4 million prescriptions.

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