King Pharmaceuticals | 4,338 followers on LinkedIn. King, an S&P 500 Index company, is a vertically integrated branded pharmaceutical company that develops, manufactures and markets therapies and technologies primarily in specialty-driven markets including neuroscience, hospital and acute care medicines. King’s business model offers the best qualities of a big and small company in one fully integrated pharmaceutical company. Our size enables us to build close personal relationships with the medical community and flexible collaborative partnerships with other pharmaceutical companies.