Some side effects can include:
purple colored spots in the mouth or bleeding under the skin, jaundice, fatigue, pale skin, high body temperature, tachycardia, or fast heart rate, difficulty breathing, headache, difficulty understanding speech and language, confusion, coma, stroke, seizure, low urine output, abdominal pain, nausea, diarrhea, vision loss
More serious side effects can also include:
unexplained or persistent bleeding, blood in the urine that changes the color pink, brown, or red, red or tar-black stools, unexplained, growing bruises, coughing up or vomiting blood
Speak with your doctor if any side effects become too severe while being treated with Plavix for help managing the side effects. If you experience any serious side effects speak with your doctor for additional treatment.