What side effects may I notice from receiving Effient?

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
-bleeding (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)
-blood clot (chest pain; shortness of breath; pain, swelling, or warmth in the leg)
-heartbeat rhythm changes (trouble breathing; chest pain; dizziness; fast, irregular heartbeat; feeling faint or lightheaded, falls)
-kidney injury (trouble passing urine or change in the amount of urine)
-purple spots on your skin or mouth
-stomach pain
-stroke (changes in vision; confusion; trouble speaking or understanding; severe headaches; sudden numbness or weakness of the face, arm or leg; trouble walking; dizziness; loss of balance or coordination)
-unusually weak or tired
-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):

-diarrhea
-headache
-nausea, vomiting
-pain in back, arms or legs

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