Clopidogrel 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.

What are the risks of taking Plavix?

• bleeding, such as from: cuts that take longer than usual to stop bleeding. nosebleeds.
• bruising more often than usual.
• fever.
• muscle pain.
• confusion.
• skin rash or itching.

Who should not take Plavix?

What is the most important information I should know about Plavix (Clopidogrel)? You should not use clopidogrel if you are allergic to it, or if you have: any active bleeding; or. a stomach ulcer or bleeding in the brain (such as from a head injury).