Notice 29 Aug 2025 regulation, pharmaceuticals, fda, health, drug approval, amylyx pharmaceuticals

🚫Amylyx Pharmaceuticals' RELYVRIO Drug Approval Withdrawn by FDA

The Food and Drug Administration (FDA or Agency) is withdrawing approval of the new drug application (NDA) for RELYVRIO (sodium phenylbutyrate and taurursodiol) for suspension, 3 gram (g)/ packet and 1 g/packet, held by Amylyx Pharmaceuticals, Inc. (Amylyx), 43 Thorndike St., Cambridge, MA 02141. Amylyx has voluntarily requested that FDA withdraw approval of this application and has waived its opportunity for a hearing.

Learn More