What side effects may I notice from receiving Excedrin Tension Headache?

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
-palpitations
-redness, blistering, peeling or loosening of the skin, including inside the mouth
-signs and symptoms of liver injury like dark yellow or brown urine; general ill feeling or flu-like symptoms; light-colored stools; loss of appetite; nausea; right upper belly pain; unusually weak or tired; yellowing of the eyes or skin
-trouble passing urine or change in the amount of urine
-unusual bleeding or bruising
-unusually weak or tired

Side effects that usually do not require medical attention (report these to your doctor or health care professional if they continue or are bothersome):

-headache
-nausea, vomiting
-trouble sleeping

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