Erythropoietin is a hormone produced by the kidney that stimulates red bone marrow to produce red blood cells, which transport oxygen throughout the body. It prevents anemia and hypoxia. Epo drugs are used to treat chemotherapy-induced anemia and anemia associated with chronic kidney disease, cancer, and HIV. Common forms of Epo include epoetin alfa, beta, omega, and delta, and derbepoetin alfa. Dosing depends on the condition being treated, with doses adjusted based on hemoglobin levels. Epo must be stored properly and not exposed to light or freezing temperatures.