Amphastar Pharmaceuticals, Inc. is a biopharmaceutical company that develops, manufactures, and markets injectable, intranasal, and inhalation products. Its offerings include complex medications such as biologics derived from living cells, proteins, and interchangeable biosimilars, as well as various drug delivery systems and proprietary products. The company serves patients with conditions such as iron deficiency anemia and low blood sugar through products like Iron Sucrose Injection and BAQSIMI®, a glucagon nasal powder.