MedWatch: Erythropoiesis Stimulating Agents Update Published: Aug 08, 2008 Erythropoiesis Stimulating Agents (ESAs) - Epoetin alfa (marketed as Procrit, Epogen), Darbepoetin alfa (marketed as Aranesp) Dear Healthcare Professional letter added. (Posted 08/08/2008). Related links FDA This will open in a new window Email this Facebook Twitter LinkedIn Pinterest Reddit Back to news