Precautions
Drug information provided by: Merative, Micromedex®
It is very important that your doctor check your progress at regular visits to make sure that this medicine is working properly. Blood tests may be needed to check for unwanted effects.
Call your doctor right away if you start to have a cough that would not go away, weight loss, night sweats, fever, chills, flu-like symptoms (eg, runny or stuffy nose, headache, blurred vision, or feeling generally ill), painful or difficult urination, or sores, ulcers, or white spots in the mouth or on the lips. These may be signs that you have an infection.
This medicine may cause serious allergic reactions, including anaphylaxis and angioedema, which can be life-threatening and require immediate medical attention. Tell your doctor right away if you have chest tightness, cough, difficulty swallowing, dizziness, fast heartbeat, hives, itching, skin rash, large, hive-like swelling on face, eyelids, lips, tongue, throat, hands, legs, feet, or genitals, puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue, trouble breathing, or unusual tiredness or weakness after using this medicine.
This medicine may cause hypotension (low blood pressure) which may lead to fainting. Check with your doctor right away if you have blurred vision, confusion, dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position, sweating, or unusual tiredness or weakness.
While you are being treated with efgartigimod alfa-fcab, do not have any immunizations (vaccines) without your doctor's approval. Live virus vaccines should not be given with efgartigimod alfa-fcab.
This medicine may cause infusion-related reactions. Check with your doctor right away if you have back pain, blurred vision, chest tightness, chills, dizziness, fever, flushing, headache, nausea and vomiting, nervousness, pounding in the ears, slow or fast heartbeat, stomach pain, trouble breathing, or weakness.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.
Portions of this document last updated: Feb. 01, 2024
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