The active ingredients of both drugs are the same, both are clopidogrel sulfate, but the manufacturers are different. Polivic is an imported drug, while Tegart is a domestic drug. Polivic is more expensive than Tegart, and it is recommended to choose the right drug for you under the guidance of a specialist. Clopidogrel hydrogen sulfate is a platelet coagulation inhibitor that selectively inhibits the binding of adenosine diphosphate to platelet receptors. Subsequently, it inhibits the activation of adenosine diphosphate complexes with glycoproteins, thereby inhibiting platelet coagulation. This drug also inhibits non-adenosine diphosphate-induced platelet coagulation, without affecting phosphodiesterase activity. The lifespan of platelets is affected by irreversible alteration of platelet adenosine diphosphate receptors. Adverse reactions are occasional gastrointestinal reactions, rash, skin mucosal bleeding, rare leukopenia and granulocyte deficiency, and rational use is the key.