| 摘要 |
The invention relates to 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, within 72 hours before an intercourse or within 120 hours after the intercourse. |
