Adverse reactions in 5% of Erythropoietin alfa treated patients in clinical studies were: Patients with CKD: Hypertension, arthralgia, muscle spasm, pyrexia, dizziness, medical device malfunction, vascular occlusion, and upper respiratory tract infection. Zidovudine-treated HIV-infected Patients: Pyrexia, cough, rash, and injection site irritation. Cancer Patients on Chemotherapy: Nausea, vomiting, myalgia, arthralgia, stomatitis, cough, weight decrease, leukopenia, bone pain, rash, hyperglycemia, headache, depression, dysphagia, hypokalemia, and thrombosis. Surgery Patients: Nausea, vomiting, pruritus, headache, injection site pain, chills, deep vein thrombosis, cough, and hypertension. Premature infants: A fall in serum ferritin values is very common (>10%)