NRx Pharmaceuticals Reports Positive FDA Office of Generic Drugs Feedback on Preservative-Free Ketamine Program April 22, 2026 depression ONLY AVAILABLE IN PAID PLANS. Originally reported by biospace. Read more Source: https://www.biospace.com/press-releases/nrx-pharmaceuticals-reports-positive-fda-office-of-generic-drugs-feedback-on-preservative-free-ketamine-program