Platelet inhibition by Clopidogrel is irreversible and will last for the life of the platelet. Overdose following Clopidogrel administration may result in bleeding complications. A single oral dose of Clopidogrel at 1500 or 2000 mg/kg was lethal to mice and to rats and at 3000 mg/kg to baboons. Symptoms of acute toxicity were vomiting, prostration, difficult breathing, and gastrointestinal hemorrhage in animals.