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The Actavis “authorized generic” Concerta is no more due to a marketing agreement that expired 12/31/17. It can still be found on a few shelves but is no longer in production and will not be restocked. None of the remaining Concerta generics (Trigen, Mylan and Impax) feature the OROS delivery system. They market an “osmotic delivery system” but should not be confused with the OROS system patented by Alza. Actavis was purchased by Teva. Teva Canada announced the launch of ACT Methylphenidate ER featuring the OROS delivery system. However, it currently is not available in the US.