615430 Disclosed herein a method for on-demand contraception, which method comprises administering a progestogen agent or progesterone receptor modulator, such as 17a-acetoxy-11b-[4-N,N-dimethylamino-phenyl)-19-norpregna-4,9-diene-3,20-dione (ulipristal acetate) in a woman. In one embodiment, the method comprises administering an amount between 10 and 40 mg of ulipristal acetate or a metabolite thereof to a woman within 120 hour after an intercourse.
