What side effects may I notice from receiving Efudex?

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
-bloody diarrhea
-fever or chills
-stomach pain
-vomiting
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

-redness or dry skin
-sensitivity to light

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