ERYKINE is generally well tolerated. The adverse events reported are frequent sequelae of disease and are not necessarily attributable to Erythropoietin therapy. The events reported in greater than 5% of patients treated with Erythropoietin during the blinded phase were: hypertension, headache, arthralgia, nausea, edema, fatigue, diarrhea, vomiting, chest pain, skin reaction (administration site), asthenia, dizziness, clotted access, pyrexia, constipation, deep vein thrombosis. Events reported to have occurred within several hours of administration of Erythropoietin were rare, mild, and transient, and included injection site stinging in dialysis patients and flu-like symptoms such as arthralgias and myalgias.