Amphastar Pharmaceuticals, Inc. plans a second OTC drug in an emergency medicine category like its Primatene Mist nasal spray, but unlike the asthma remedy, it won’t be the only one of a formulation available nonprescription in the US.
Amphastar plans in 2024 to submit to the Food and Drug Application an application to move its Rextovy 4mg naloxone hydrochloride intranasal formulation from Rx to OTC