Efgartigimod Alfa-Fcab Injection

Name: Efgartigimod Alfa-Fcab Injection Drug Interactions
Creator: Dr. Brian Staiger, PharmD, BCPS

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 →

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)

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

Check another drug

Still have questions about this combination?

Every question gets a real answer from a licensed pharmacist — free, and usually within a day.

Ask the pharmacist

Educational information only, not medical advice. Always confirm interactions with your pharmacist or prescriber before making any change to your medications.