FDA Proposes Withdrawal of Mallinckrodt’s Generic Concerta

Federal Register Notice: FDA has proposed to withdraw ANDA approval for methylphenidate hydrochloride extended-release tablets, and is announcing an opportunity for the holder of the ANDA, Mallinckrodt Pharmaceuticals, to request a hearing. After receiving adverse event reports, FDA determined there was an insufficient therapeutic effect of the Mallinckrodt’s product. A new bioequivalence study sponsored by FDA found that the product failed to meet the criteria for bioequivalence recommended by the agency in an updated guidance. To view the notice, click here.

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