Results: In this study, the frequencies of CYP2C19 is as follow: homozygous CYP2C19 * 1 wild-type was 50%, mutation heterozygous of CYP2C19 * 1 / * 2 and CYP2C19 * 1 / * 3 genotypes was 42% and finally, homozygous mutant CYP2C19 * 2 / * 2 was 8%.