Poliovel is a clopidogrel hydrogen sulfate tablet, which is an anti-platelet drug mainly used for the treatment of coronary heart disease and cerebral infarction. It can delay the aggravation of coronary heart disease and cerebral infarction disease by inhibiting the aggregation of platelets, which is beneficial to the treatment of patients’ diseases. Because of the anti-platelet effect of this drug, the most common side effect is bleeding reaction. It is important to pay close attention to the observation during the administration of the drug. If patients experience bleeding reactions such as hematuria and black stool, they must immediately stop the drug and visit the hospital to give appropriate treatment and adjust the next treatment plan. Because when used for diseases such as coronary heart disease, Bolivar requires long-term use, patients must not discontinue the drug on their own to avoid complications such as blood clots.