Require Prednisolone Solution Studies: DifGen

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DifGen Pharmaceuticals is petitioning FDA to not approve an ANDA for prednisolone ophthalmic solution 1% without the inclusion of long-term stability studies conducted under refrigerated conditions. The 11/26 petition specifically asks the agency to:

  • require generic applicants to conduct long-term stability studies that specifically demonstrate the product’s stability over its entire shelf life when stored at refrigerated temperatures;
  • refrain from approving any ANDA for a generic version of the product that does not include data from such long-term stability studies; and
  • revisit the final approval and award of an AB rating for the Lupin generic product dated 8/2 if the ANDA did not include the specified studies, and convert the approval to a B rating until the studies are submitted.

“We are concerned that generic versions of the product may not meet the necessary stability requirements for refrigerated conditions, which could compromise the product’s quality, safety, and efficacy,” DifGen writes. “The stability of the product is critical to its performance, and any impact/change in critical quality attributes of the product could lead to adverse events or therapeutic failures.”

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