Erythropoietin, or EPO, is a new synthetic peptide that athletes take to improve their performance in their respective sports. EPO is a protein hormone produced by your kidneys and liver that is released into your bloodstream and is supposed to connect to bone marrow receptors. The production of erythrocytes, or red blood cells, may be stimulated as a result of this. It is also used to treat anemia induced by chronic renal failure as a result of this. It can also improve the way oxygen is circulated within your system since it hastens the creation of red blood cells, which is good for athletes who engage in strenuous physical activity on a regular basis.