What side effects may I notice from receiving Byetta?

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
-breathing problems
-signs and symptoms of low blood sugar such as feeling anxious, confusion, dizziness, increased hunger, unusually weak or tired, sweating, shakiness, cold, irritable, headache, blurred vision, fast heartbeat, loss of consciousness
-swelling of the ankles, feet, hands
-trouble passing urine or change in the amount of urine
-unusual bleeding or bruising
-unusual stomach pain or upset
-unusually weak or tired
-vomiting

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

-constipation
-diarrhea
-dizziness
-headache
-nausea
-upset stomach

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