title: Dexmethylphenidate extended-release capsules for attention deficit hyperactivity disorder.
abstract: Medications for attention deficit hyperactivity disorder (ADHD) currently represent the ninth largest segment of the CNS market by sales, with 2.4 billion USD spent annually on this condition and 40% annual growth. Stimulant medications remain the most effective ADHD therapies and provide robust improvement in ADHD symptoms in both youth and adults. Current prescribing practices favor extended release preparations due to increased convenience, compliance and tolerability with once-daily dosing. Dexmethylphenidate extended release is a long-acting preparation of the ADHD medication Focalin (dexmethylphenidate immediate release) and was approved for marketing by the US Food and Drug administration in June 2005. Dexmethylphenidate consists of the single dextro-isomer form of d,l-methylphenidate commonly marketed as Ritalin. Dexmethylphenidate extended release utilizes spheroidal oral drug absorption system technology to achieve a 50% immediate medication delivery and 50% delayed release of dexmethylphenidate approximately 4 h after ingestion. Placebo-controlled, clinical trials in children and adults with ADHD have demonstrated efficacy for behavioral and academic ratings, with an analog classroom study showing medication effects up to 12 h after dosing. Dexmethylphenidate extended release was generally well tolerated with a side-effect profile similar to other stimulants. The most common reported side effects include diminished appetite and insomnia. Given its duration of effect, favorable tolerability and flexibility in dosing, dexmethylphenidate extended release is likely to gain considerable use as an ADHD treatment.
authors: David Geffen School of Medicine, 300 UCLA Medical Plaza, Suite 1414, Los Angeles, CA 90095, USA. jmcgough@mednet.ucla.edu
authors: James J
authors: JJ
authors: McGough
authors: Caroly S
authors: CS
authors: Pataki
authors: Robert
authors: R
authors: Suddath
mesh_terms: D000818:Animals; D001289:Attention Deficit Disorder with Hyperactivity / Q000188:drug therapy* / Q000378:metabolism / Q000523:psychology; D002214:Capsules; D003692:Delayed-Action Preparations / Q000008:administration & dosage / Q000737:chemistry / Q000493:pharmacokinetics; D064699:Dexmethylphenidate Hydrochloride; D006801:Humans; D008774:Methylphenidate / Q000008:administration & dosage* / Q000031:analogs & derivatives* / Q000493:pharmacokinetics
chemical_list: D002214:Capsules; D003692:Delayed-Action Preparations; D064699:Dexmethylphenidate Hydrochloride; D008774:Methylphenidate