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Table 1 Extended-release preparations of methylphenidate currently available in the UK

From: Clinical use of a modified release methylphenidate in the treatment of childhood attention deficit hyperactivity disorder

Brand name UK marketing company Technology IR:DR ratio
Medikinet XL Flynn Pharma Ltd Multiparticulate bead system 50:50
Equasym XL Shire Pharmaceuticals Ltd Multiparticulate bead system 30:70
Concerta XL Janssen-Cilag Ltd Osmotic release oral system 22:78
  1. DR = delayed release; IR = immediate release.