Get emergency medical help if you have signs of an allergic reaction to Plavix: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Plavix increases your risk of bleeding, which can be severe or life-threatening. Call your doctor or seek emergency medical attention if you have bleeding that will not stop, if you have blood in your urine, black or bloody stools, or if you cough up blood or vomit that looks like coffee grounds.
Also call your doctor at once if you have:
nosebleeds, pale skin, easy bruising, purple spots under your skin or in your mouth;
jaundice (yellowing of your skin or eyes);
fast heartbeats, shortness of breath;
headache, fever, weakness, feeling tired;
little or no urination;
a seizure;
low blood sugar - headache, hunger, sweating, irritability, dizziness, fast heart rate, and feeling anxious or shaky; or
signs of a blood clot - sudden numbness or weakness, confusion, problems with vision or speech.
Common Plavix side effects may include:
bleeding.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Plavix side effects (more detail)
