Methylphenidate Transdermal System in Attention-Deficit Hyperactivity Disorder in Adolescentsy

نویسنده

  • Gillian M. Keating
چکیده

Attention-deficit hyperactivity disorder (ADHD) is characterized by inattention, hyperactivity, and impulsivity. Globally, ADHD affects approximately 5–10% of children and persists into adolescence in up to 85% of affected individuals. Psychostimulants, such as methylphenidate and amfetamine, are the mainstay of treatment in ADHD. A patch that delivers methylphenidate transdermally (methylphenidate transdermal system; Daytrana ) has been developed for the treatment of ADHD. The patch comprises a backing layer, an adhesive formulation that incorporates methylphenidate and uses DOT Matrix technology, and a protective liner, which is removed prior to application. The features and properties of methylphenidate transdermal system (including available patch sizes and the nominal methylphenidate dose delivered by each patch size) are shown in table I. Once applied to the skin, methylphenidate transdermal system releases methylphenidate continuously. A potential advantage of this patch technology is that it allows the duration of the effect to be tailored to the individual by varying the duration of the application (‘wear time’). Methylphenidate transdermal system is approved in the US for the treatment of ADHD, and its use in children aged 6–12 years with ADHD has been reviewed previously. This profile report examines the use of methylphenidate transdermal system in adolescents aged 13–17 years with ADHD. Adolescents aged 13–17 years with ADHD were randomized to receive methylphenidate transdermal system or placebo transdermal system in a double-blind, multicenter, 7-week trial (core trial). During a 5-week dose-optimization period, patients were titrated to their optimal methylphenidate transdermal system dosage (10, 15, 20, or 30mg); the dose-optimization period was followed by a 2-week maintenance period, during which patients continued treatment at their optimal dosage. Patches were applied to the hip each morning and worn for 9 hours per day. Following the core trial, eligible patients could receive longer-term therapy with methylphenidate transdermal system 10–30mg in a noncomparative extension study of »6 months duration. According to the results of the core trial, methylphenidate transdermal system 10–30mg was effective in adolescents aged 13–17 years with ADHD. The mean ADHD-Rating Scale-IV (ADHD-RS-IV) total score (primary endpoint) decreased to a significantly (p < 0.001) greater extent in adolescents receiving methylphenidate transdermal system (n = 143) than in those receiving placebo transdermal system (n = 72), with

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عنوان ژورنال:

دوره 12  شماره 

صفحات  -

تاریخ انتشار 2012