The FDA has approved Aptensio XR (Rhodes), an extended-release formulation of methylphenidate hydrochloride, for treatment of attention-deficit/hyperactivity disorder (ADHD). The Aptensio XR capsules contain multilayer beads designed to provide both a rapid onset and a long duration of action. This formulation of methylphenidate has been available in Canada as Biphentin since 2006.

METHYLPHENIDATE — Methylphenidate is effective in reducing the symptoms of ADHD in both children and adults.1,2 The effects of immediate-release methylphenidate products on behavior begin within 30 minutes and last for 3-5 hours; repeat dosing at mid-day is usually required. Long-acting methylphenidate products are dosed once daily. Some generic formulations of Concerta, which has a duration of action of 10-12 hours, have been found to release the drug at a slower ... more      

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