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Efgartigimod alfa
  • Treatments
  • Myasthenia Gravis

Efgartigimod alfa

Generic name: efgartigimod alfa [ EF-gar-TIG-i-mod-AL-fa ]
Brand name: Vyvgart
Dosage form: intravenous solution (400 mg/20 mL)
Drug class:Immune globulins

Medically reviewed by Drugs.com on Apr 12, 2022. Written by Cerner Multum.

What is efgartigimod alfa?

Efgartigimod alfa is used in adults to treat myasthenia gravis.

Efgartigimod alfa may also be used for purposes not listed in this medication guide.

Warnings

Call your doctor at once if you have fever, chills, sore throat, body aches, unusual tiredness, loss of appetite, bruising or bleeding; or hives, difficult breathing, swelling of your face, lips, tongue, or throat.

Before taking this medicine

Tell your doctor if you currently have an infection or had any infections recently.

Tell your doctor if you are pregnant or plan to become pregnant, or breastfeeding or plan to breastfeed.

How is efgartigimod alfa given?

Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.

Efgartigimod alfa is injected into a vein by a healthcare provider. efgartigimod alfa is given over 1 hour once a week for 4 weeks.

Doses are based on weight. Your dose may change if you gain or lose weight.

You will be watched for a short time to make sure you do not have an allergic reaction.

Make sure you are current on all vaccines before you start using efgartigimod alfa.

What happens if I miss a dose?

Call your doctor for instructions if you miss an appointment for your efgartigimod alfa injection.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What should I avoid while receiving efgartigimod alfa?

Avoid receiving a "live" vaccine while you are being treated with efgartigimod alfa.

Efgartigimod alfa side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Efgartigimod alfa may cause serious side effects. Call your doctor at once if you have:

  • signs of infection--fever, chills, sore throat, body aches, unusual tiredness, loss of appetite, bruising or bleeding.

Common side effects of efgartigimod alfa may include: