What are clopidogrel (Plavix) side effects?

Common side effects of clopidogrel are listed below. Please tell your doctor if these adverse effects are severe or do not go away after a few days.

• Fatigue
• Dizziness
• Headache
• Nausea
• Vomiting
• Diarrhea
• Stomach pain
• Nosebleed

Some of the adverse reactions of clopidogrel can be more serious. Please call your doctor immediately if you experience:

• Hives, rash, itching, or other signs of an allergic reaction
• Difficulty breathing or swallowing
• Swelling of the face, hands, or feet
• Hoarseness
• Blood in vomit
• Vomit that resembles coffee grounds
• Blood in stools
• Dark-colored or tarry stools
• Weakness
• Numbness
• Problems with speech
• Problems with vision
• Fever
• Shortness of breath
• Fast heartbeat
• Bleeding under the skin or purple patches on the skin
• Pale skin
• Yellowing of the skin or whites of the eyes
• Confusion 
• Seizures

The above list may not include all the potential adverse effects of clopidogrel. Contact your doctor if you have severe adverse effects or your symptoms are worsening. You can also report unusual side effects to the Food and Drug Administration at 1-800-FDA-1088.

Clopidogrel overdose: In case of a known or suspected overdose of clopidogrel, get emergency medical help right away, call your local poison control center, or call the national poison helpline at 1-800-222-1222. Symptoms of a clopidogrel overdose can include unusual bruising or active bleeding that does not stop.

Source: FDA