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  • Title: Dexmethylphenidate extended-release capsules for attention deficit hyperactivity disorder.
    Author: McGough JJ, Pataki CS, Suddath R.
    Journal: Expert Rev Neurother; 2005 Jul; 5(4):437-41. PubMed ID: 16026226.
    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.
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