What side effects may I notice from receiving Cilostazol?

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
-chest pain
-fast, slow, or irregular heartbeat
-signs and symptoms of bleeding such as bloody or black, tarry stools; red or dark-brown urine; spitting up blood or brown material that looks like coffee grounds; red spots on the skin; unusual bruising or bleeding from the eye, gums, or nose
-swelling in the legs or ankles

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

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