Claim: 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.
Evidence: 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.