Require Generic Ozobax Safety Data: Metacel

Share

Metacel Pharmaceuticals is petitioning FDA to require all sponsors of generic forms of its Ozobax (baclofen) oral solution to conduct and provide the same amount of safety data as the agency asked Metacel to perform in support of the supplemental approval of Ozobax. The petition specifically asks FDA to:

  • require any ANDA sponsor citing Ozobax as the reference-listed drug to conduct and provide safety evidence to support any flavoring ingredient, similar to the data FDA mandated from Metacel, i.e., evidence to support chronic lifetime duration of use for any flavoring ingredient; and
  • deny any requests from generic drug sponsors to waive the tests.

Metacel says that even though cherry flavoring has historically been generally recognized as safe, FDA had concerns about the flavoring’s safety and determined there was insufficient evidence of safety for Metacel’s intended cherry flavoring. Specifically, it says, FDA seemed to be worried that there was insufficient evidence of safety for the proposed flavor to support chronic (lifetime) duration of drug treatment use.

The petition says FDA “must treat NDA and ANDA sponsors in an equivalent manner by requiring the same essential stability and quality control testing and deny any requests for waiver of such testing by ANDA sponsors. Failure to do so will result in an inability of generic baclofen products to address the same safety issues that were present for Metacel, which could lead to increased patient risk and negative patient outcomes.”

Read more