Approved by the FDA in 2001, the patch is sold by prescription and releases ethinyl estradiol (a type of estrogen), and a progestin called norelgestromin via the skin into the bloodstream.
FDA在2001年就已经证实，这种通过渗透皮肤来释放雌激素和孕激素的
一种处方类药
。
Approved by the FDA in 2001, the patch is sold by prescription and releases ethinyl estradiol (a type of estrogen), and a progestin called norelgestromin via the skin into the bloodstream.
FDA在2001年就已经证实，这种通过渗透皮肤来释放雌激素和孕激素的一种处方类药。
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