Don’t Approve Eagle Vasostrict ANDA Yet: Par
Par Sterile Products is asking FDA not to approve an Eagle Pharmaceuticals ANDA citing Vasostrict as the reference-listed drug until Eagle makes changes recommended by Par. Par also asks the agency not to approve any pending or future vasopressin ANDA referencing Vasostrict if it has pH release specifications that are the same as or close to the pH stability specifications until it has made changes sought by Par.
In its 11/8 petition, Par says that during a July patent trial over the Eagle ANDA, it came to light that if Eagle manufactures its product at the upper end of the pH release specification in its ANDA, then the pH of Eagle’s product will likely increase above the upper limit set in its stability specification.
“The release specification and the stability specification for Eagle’s ANDA product have a pH range of 3.4 to 3.6,” Par says. “Because the pH of Eagle’s product is likely to increase during its shelf life, Eagle’s ANDA product may be released within the release specification parameters, but the pH will drift upward and outside of the specification during the product’s shelf life, creating potential issues for the stability and immunogenicity of Eagle’s product.”