| 摘要 |
<p>This invention provides a method of contraception which comprises administering to a female of child bearing age for a combination of a progestin at a daily dosage of 40-500 .mu.g trimegestone, 250 .mu.g - 4 mg dienogest, or 250 .mu.g - 4 mg drospirenone, and an estrogen at a daily dosage equivalent in estrogenic activity to 10-20 .mu.g ethinyl estradiol for 23-25 days beginning on day 1 of the menstrual cycle, and wherein the same dosage of the progestin and estrogen combination is administered in each of the 23-25 days.</p> |
