Milestone Pharmaceuticals to Present Etripamil Data at 2026 ACC Annual Scientific Session on March 17, 2026 American College of Cardiology Cardamyst etripamil Milestone Nasal Spray Paroxysmal supraventricular tachycardia +
FDA Rejects Milestone Pharmaceuticals' Etripamil Nasal Spray for PSVT on March 28, 2025 Cardamyst Complete etripamil Milestone Paroxysmal supraventricular tachycardia rejection Response process United States Food and Drug Administration +