Erythropoietin (EPO) is an essential hormone for red blood cell production. Erythropoietin has a range of actions including vasoconstriction-dependent hypertension, stimulating angiogenesis, and inducing proliferation of smooth muscle fibers. Equine Erythropoietin Recombinant Protein is purified Erythropoietin (EPO) produced in yeast.