The specification of Polivir is 75mg tablet and the price of a box of 7 tablets is$91.7. Polivir is an imported drug, the domestic is also the same specification of 75mg one tablet, a box of 7 tablets price is 22.26 yuan, much cheaper than it. There is also a domestic specification of 75mg a tablet, a box of 10 tablets price is 31.57 yuan, and there is another specification of 25mg a tablet, a box of 10 tablets price is 13.1 yuan. Clopidogrel mainly has the effect of inhibiting platelet aggregation, used to prevent thrombosis of atherosclerosis, clopidogrel to play the efficacy of the drug needs to be through the body’s cytochrome P450, 2C19 enzyme, which has a high activity for this enzyme, the efficacy of the patient can be measured 2C19 genotype, to see whether it is suitable for taking the Polivir this drug.