Add time:08/24/2019         Source:sciencedirect.com

BackgroundUlipristal acetate (UPA) 30 mg (ella®, HRA-PHARMA, Paris, France) acts as an emergency contraceptive (EC) by delaying ovulation. Because it is a selective progesterone receptor modulator (SPRM), an additional effect on interfering with implantation has been suggested.

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