| 摘要 |
<p>This invention provides a method of contraception which comprises administering to a female of childbearing age for 28 days per menstrual cycle a combination of a progestin at a daily dosage equivalent to 40-125 mu g levonorgestrel and an estrogen at a daily dosage equivalent to 10-15 mu g ethinyl estradiol for 23-25 days beginning on day 1 of the menstrual cycle, followed by administering an estrogen at a daily dosage equivalent to 5-15 mu g ethinyl estradiol for 3-5 days.</p> |
