PharmaTher Complete Response Letter on Ketamine

FDA has issued PharmaTher a complete response letter (CRL) on its ANDA for Ketarx (ketamine) and its use in anesthesia, sedation, pain, mental health, neurological, and medical countermeasures indications. “The deficiencies cited in the CRL are classified as minor,” the company says.

The agency letter requested new and updated information and clarifications related to drug substance, drug product, manufacturing and microbiology, it says, adding that it did not “express concern about the stability of the ketamine submission batches, which achieved 18 months of stability without issue, and no new preclinical and clinical studies were requested.”

PharmaTher says it will be working with its third-party manufacturing partner to resolve the deficiencies.

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