The full name of erythropoietin is erythropoietin. Erythropoietin can’t be used again for how long, different patients have different conditions, it is necessary to analyze the specific situation. 1. If after the first use of the drug, showing obvious symptoms of allergy to erythropoietin, indicating that the patient can not use erythropoietin, and can not be hit again. Erythropoietin adverse reactions include rash, diarrhea, etc. Contraindications are allergy to the product and patients with severe hepatic or renal impairment. 2. If the condition is mild, after two weeks of using erythropoietin, the red blood cells reach the normal standard, and can not be hit again to avoid adverse effects. If the recovery is slow, one month after the red blood cells to reach the normal standard, continue to use may make the red blood cells higher than the normal value, so in a month after the can not play. Erythropoietin how long to play, need to be decided by the doctor according to the condition, the above content is for reference only, the specific stopping time also need to be decided by the doctor.