Efgartigimod Alfa-Fcab Injection

19 interactions 16 cited references
Also sold as: Vyvgart Vyvgart®
About Efgartigimod Alfa-Fcab Injection

Efgartigimod alfa-fcab injection is used to treat a certain form of myasthenia gravis (MG; a disorder of the nervous system that causes muscle weakness). Efgartigimod alfa-fcab is in a group of medications called monoclonal antibodies. It works by reducing a certain natural substance in the body that causes symptoms of… Read the full Efgartigimod Alfa-Fcab Injection drug information page →

Dr. Brian Staiger, PharmD, BCPS
Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated Aug 10, 2026 · Editorial policy · Data sources

Sources: FDA prescribing information (Structured Product Labeling), the published literature cited in each entry, DDInter 2.0 (a major open-access drug-interaction database), and legacy DrugBank interaction data distributed by the NIH's RxNav service (decommissioned in 2024) — analyzed and reviewed by our pharmacist team. How we build this library →

Most serious with: Adenovirus Vaccine Type 4, Live Adenovirus Vaccine Type 7, Live Bacillus Of Calmette And Guerin Vaccine, Live Cholera Vaccine, Live Dengue Tetravalent Vaccine, Live Ebola Zaire Vaccine, Live
17 Major 2 Moderate
All (19) Major (17) Moderate (2)

Major

Efgartigimod Alfa-Fcab Injection Adenovirus Vaccine Type 4, Live Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details Efgartigimod Alfa-Fcab Injection Adenovirus Vaccine Type 7, Live Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details Efgartigimod Alfa-Fcab Injection Bacillus Of Calmette And Guerin Vaccine, Live Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details Efgartigimod Alfa-Fcab Injection Cholera Vaccine, Live Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details Efgartigimod Alfa-Fcab Injection Dengue Tetravalent Vaccine, Live Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details Efgartigimod Alfa-Fcab Injection Ebola Zaire Vaccine, Live Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details Efgartigimod Alfa-Fcab Injection Influenza Virus Vaccine, Live Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details Efgartigimod Alfa-Fcab Injection Measles Virus Vaccine, Live Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details Efgartigimod Alfa-Fcab Injection Mumps Virus Vaccine, Live Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details Efgartigimod Alfa-Fcab Injection Poliovirus Vaccine, Live Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details Efgartigimod Alfa-Fcab Injection Rotavirus Vaccine, Live Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details Efgartigimod Alfa-Fcab Injection Rubella Virus Vaccine, Live Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details Efgartigimod Alfa-Fcab Injection Smallpox Monkeypox Vaccine Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details Efgartigimod Alfa-Fcab Injection Typhoid Vaccine, Live Vivotif Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details Efgartigimod Alfa-Fcab Injection Varicella Virus Vaccine, Live Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details Efgartigimod Alfa-Fcab Injection Yellow Fever Vaccine Stamaril Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details Efgartigimod Alfa-Fcab Injection Zoster Vaccine, Live Reduced immunoglobulin (IgG) levels and possible alteration of immunization efficacy Details

Moderate

Efgartigimod Alfa-Fcab Injection Eculizumab Reduced eculizumab exposure and reduced efficacy of eculizumab Details Efgartigimod Alfa-Fcab Injection Ravulizumab-Cwvz Reduced efficacy of ravulizumab-cwvz Details

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