What side effects may I notice from receiving EMPAVELI?

Side effects that you should report to your doctor or health care professional as soon as possible:

-allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
-infection (fever, chills, cough, sore throat, pain or trouble passing urine)
-meningitis (stiff neck; sensitivity to light; headache; drowsiness; fever; nausea, vomiting; rash)
Side effects that usually do not require medical attention (report these to your doctor or health care professional if they continue or are bothersome):

-back pain
-chest pain
-diarrhea
-pain, redness, or irritation at site where injected
-stomach pain
-unusually weak or tired

This list may not describe all possible side effects for EMPAVELI. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.