<prompt> Ulipristal acetate is a:GnRH agonistSelective progesterone receptor modulatorAndrogen antagonistSelective estrogen receptor modulator  <response>: Ulipristal Synthetic progesterone hormone receptor modulator Attaches to progesterone receptor and preventsdelays ovulation and suppresses endometrium,prevents implantation. Although not approved for its use in India, it is being tried for its role in medical management of fibroid uterus and as an emergency contraceptive 