The main ingredient of Polivir is clopidogrel, which is an antiplatelet drug that mainly plays a role in antiplatelet aggregation and thrombosis prevention. In current clinical applications it is mainly used for the prevention of cardiovascular and cerebrovascular events, for example, it can be used to prevent myocardial infarction and stroke prevention. Polivir should be accurately called clopidogrel, there may be different manufacturers of drugs, both imported clopidogrel, often referred to as the trade name to do Polivir, and domestic clopidogrel, may come from different manufacturers. In fact, whether imported or domestic, the therapeutic effect of the drug is basically the same, there is no obvious difference, are through the role of antiplatelet effect to play the efficacy of the drug. Other drug metabolism, generally speaking, imported and domestic drugs are not obvious differences, because the domestic drugs in the market is also to be compared with imported goods, if there is bioequivalence can be approved for marketing. In short, there is basically no significant difference between imported and domestically produced drugs. Individual patients may react differently to these two drugs, and this is in fact based on your individual differences to judge. In short, there is no difference in theory between the two drugs, both can be effective anti-platelet, to prevent the occurrence of cardiovascular and cerebrovascular diseases.