Intravenous Immunoglobulin (IVIG) IVIG makes use of antibodies that can be used to treat recurrent pregnancy loss. Synonyms: Intravenous Immunoglobulin, IVIG Related Articles: Complete guide to embryo implantation and implantation failure NK cells in IVF Evidence-based recommendations from ESHRE for 27 IVF add-ons Meta-analysis of commonly used IVF immunotherapies shows no benefit RIF patients benefit from single or combination immunotherapy during IVF