Efgartigimod Alfa (ef-gar-TIG-i-mod AL-fa), Hyaluronidase-qvfc (hye-al-ure-ON-i-dase - qvfc)

Treats generalized myasthenia gravis and chronic inflammatory demyelinating polyneuropathy.

Brand Name(s):

Vyvgart Hytrulo

When This Medicine Should Not Be Used:

How to Use This Medicine:

Injectable

• Your doctor will prescribe your exact dose and tell you how often it should be given. This medicine is given as a shot under your skin. It is usually given in the stomach area.
• A nurse or other health provider will give you this medicine.
• Missed dose: Call your doctor or pharmacist for instructions.

Drugs and Foods to Avoid:

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

• Some medicines can affect how efgartigimod alfa/hyaluronidase-qvfc works. Tell your doctor if you are using a medicine that can weaken the immune system.
• This medicine may interfere with vaccines. Ask your doctor before you get a flu shot or any other vaccines. You should not receive live virus vaccines during treatment with this medicine.

Warnings While Using This Medicine:

• Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease or any type of infection.
• This medicine may cause the following problems:
  • Increased risk of serious infections
  • Infusion-related reactions
• Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.

Possible Side Effects While Using This Medicine:

Call your doctor right away if you notice any of these side effects:

• Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
• Change in how much or how often you urinate, lower back or side pain, difficult or painful urination
• Fever, chills, cough, runny or stuffy nose, sore throat, body aches
• Lightheadedness or fainting
• Pain, itching, burning, swelling, or a lump under your skin where the shot was given

If you notice these less serious side effects, talk with your doctor:

• Headache

If you notice other side effects that you think are caused by this medicine, tell your doctor

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088