With retrospective evaluation of 44 patients suffering from Guilan-Barre Syndrome (GBS), Chronic Idiopathic Demtyelinative Polyradiculoneuropathy (CIDP) and Myasthenia Gravis (MG) treated with intravenous immunoglobulin, we found following results: 1) Initial symptoms of improvement on forth or fifth days. 2) Maximum recovery for CIDP and MG were after 16-24 and 3-11 days, respectively. 3) No m...