AMAG Pharmaceuticals Inc primarily uses its nanoparticle technology to develop therapeutic compounds to treat anemia in patients suffering from chronic kidney disease, as well as imaging agents that assist in identifying cancerous tumors. The company recently received Food and Drug Administration approval for Feraheme, a novel iron replacement drug for CKD patients suffering from anemia, and also offers GastroMARK, an imaging aid used with magnetic resonance imaging. Most of the revenues are generated through the sale of Feraheme and Makena which is a hydroxyprogesterone caproate injection.