What side effects may I notice from receiving AZO?

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
-blue or purple color of the skin
-difficulty breathing
-fever
-less urine
-unusual bleeding, bruising
-unusual tired, weak
-vomiting
-yellowing of the eyes or skin

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

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