Function:

1.Ulipristalacetate is a progesterone agonist/antagonist whose mechanism of action is inhibition or delayed ovulation.
2.Endometrial changes, however, may also is one of the causes of curative effect of acetic acid uri department he belongs to selective progesterone receptor modulators, part of progesterone receptor antagonist and exciting role it and progesterone receptors in the human body to prevent the combination of progesterone and Chemicalbook progesterone receptor acetate uri department his effectiveness depends on the delivery time in the menstrual cycle in the middle of the follicular hyperplasia drug would inhibit ovarian follicles generation and reduce the concentration of estradiol in the periods of peak luteinizing hormone drug can make the follicle delayed crack 5 ~ 9 days
Early luteal administration did not significantly delay endometrial maturation, but reduced endometrial thickness by 0.62.2 mm(mean SD)