Pegintereron alfa-2a

Peginterferon alfa-2a (Pegasys) is a medication used to manage certain blood disorders called Myeloproliferative Neoplasms (MPNs), which are conditions where your bone marrow makes too many blood cells. It helps to stabilize your blood counts and can reduce the number of abnormal cells. This treatment is typically given as a shot under the skin once a week. While it may be used for conditions beyond its initial approval, many doctors choose it for MPN treatment, partly because it can be used safely during pregnancy. This topic provides practical information about this medication and how it might fit into your care plan.