Once-weekly administration of NESP® proved to be as effective for improving anemia as ESPO® given twice or three times weekly. Treatment-related adverse events (AEs) occurred in 13 (21.3%) of 61 patients treated with NESP® compared to 7 (11.9%) of 59 patients treated with ESPO®, showing no significant difference between the two groups (p=0.221, Fisher’s exact test). Frequently reported AEs with NESP® were aggravated hypertension in 5 patients (8.2%), increased blood pressure in 2 patients (3.3%), arteriovenous fistula site complication in 2 patients (3.3%) and abnormal hepatic function in 2 patients (3.3%), while those with EPO® were aggravated hypertension in 2 patients (3.4%), increased blood pressure in 2 patients (3.4%) and arteriovenous fistula site complication in 2 patients (3.4%).