Under the trade name Ella, ulipristal acetate is an agent that acts on the progesterone receptor, called selective progesterone receptor modulator, that is administered by mouth.
Ella, trade name in the US of ulipristal acetate, an emergency contraceptive Ulipristal acetate, sold under the brand name Ella among others, is a medication used for emergency contraception (birth control) and uterine fibroids. It is in the selective progesterone receptor modulator (SPRM) class of medications. A selective progesterone receptor modulator (SPRM) is an agent that acts on the progesterone receptor (PR), the biological target of progestogens like progesterone. It is taken by mouth. 
