Intravenous immunoglobulin, or IVIG, treatments are infusions of a highly purified, carefully screened blood product that comes from the plasma of 10,000 to 50,000 donors, states the Immune Deficiency Foundation. IVIG is also called Ig replacement therapy because it contains gamma globulin, or IgG, antibodies that replace missing antibodies.
Doctors administer IVIG to treat a range of autoimmune conditions, idiopathic diseases and infections, explains KabaFusion. It also treats a variety of neurological, dermatological, rheumatological, hematological and infectious diseases.
A nurse or doctor administers the infusion intravenously once every four to six weeks, states Phoenix Neurological Associates. The duration of treatment varies from individual to individual; however, on average, IVIG treatment takes four to six hours.