Amphastar Pharmaceuticals is a recognized pharmaceutical company that uses state-of-the-art, cGMP-compliant facilities to develop, manufacture, and market biopharmaceutical injectable, intranasal, and inhalation products. In addition to the Corporate Headquarters, Amphastar has five manufacturing facilities in the United States, China, and Europe, along with a state-of-the-art New Drug Research Center. As a commitment to high quality, all Amphastar finished products are manufactured in the United States.