Eton Pharmaceuticals, Inc. announced the Company's New Drug Application (NDA) for ET-400, a proprietary patented formulation of hydrocortisone oral solution, has been accepted by the U.S. Food and Drug Administration (FDA) and has been assigned a Prescription Drug User Fee Act (PDUFA) target action date of February 28, 2025. ET-400 is a proprietary room temperature stable formulation of oral hydrocortisone solution. The Company has been issued a patent related to the product by the U.S. Patent and Trademark Office that expires in 2043 and has additional patent applications currently under review.