The main ingredient of Polivir is clopidogrel bisulfate, which has the same effect when taken in the morning as it does in the evening. The drug instruction does not specify the time of taking the drug, so patients can take it according to their own preferences. Clopidogrel bisulfate is a commonly used antiplatelet drug, which can effectively prevent thrombosis by inhibiting platelet aggregation, and can be used in the treatment of myocardial infarction, acute coronary syndromes and other peripheral arterial thrombotic diseases. There may be a risk of adverse reactions such as blood and lymphatic system disorders, gastrointestinal dysfunction, liver function abnormalities, increased creatinine levels, vasculitis, and severe thrombotic thrombocytopenic purpura when taking clopidogrel bisulfate. If patients experience adverse reactions while taking this medication, discontinue the medication and consult a physician for dose reduction or replacement with another medication. The use of this drug is strictly prohibited if the patient has a bleeding disorder or is allergic to this drug.