Milestone Pharmaceuticals is a clinical-stage biopharmaceutical company developing therapies for the treatment of cardiovascular diseases. The company's lead product candidate, etripamil, is a novel, potent and short-acting calcium channel blocker designed to be administered intranasally for the rapid termination of episodes of paroxysmal supraventricular tachycardia (PSVT). The company is also developing additional applications of etripamil for other cardiovascular indications. Milestone Pharmaceuticals was founded in 2005 and is headquartered in Montreal, Canada.