FDA Approves Teva’s Generic Seizure Drug

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FDA has approved a Teva Pharmaceuticals ANDA for the first generic version of Lundbeck’s Sabril (vigabatrin) 500 mg tablets for treating complex partial seizures, also called focal seizures, as an adjunctive therapy in patients 10 years and older who have responded inadequately to several alternative (refractory) treatments. Teva had trouble obtaining drug samples from Lundbeck to conduct bioequivalence testing, according to the agency. It intervened last year, and began publishing a list of inquiries from generic drug developers seeking FDA’s help in obtaining samples from brand companies. FDA noted that the brand companies were blocking access to the samples because the brand products are subject to limited distribution programs.

 

Labeling for vigabatrin tablets includes a boxed warning for permanent vision loss, and Teva’s generic is now part of a single shared-system Risk Evaluation and Mitigation Strategy (REMS) program with other drug products containing vigabatrin to ensure safe use of the product. “Brand and generic drug makers are required to develop a single shared-system REMS program (unless FDA waives the single shared system requirement) when a generic drug seeks approval and the brand drug has a REMS associated with it,” FDA says.

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