复方孕素1号片是由孕素1号与少量炔雌醚配伍而成,其中孕素1号(甲地孕醇环戊烷丙酸酯)是我国启行研制的一种新的合成孕激素。临床上作为女用长效避孕药,于每一月经周期第十天服一片。试用结果表明,该药副作用少,有效率较高,但还存在一个主要缺点,即服药后月经周期缩短,从而影响了该药的普及。因此分析该药造成周期缩短的原因并加以克服是必要的。 Compound progestin tablets No. 1 by the progesterone No. 1 and a small amount of ethinylestradiol compatibility made of which Pro Su No. 1 (megestrol cyclopentane propionate) is China’s development started a new synthetic pregnancy hormone. Clinically as a long-acting female contraceptives, on the tenth day of each menstrual cycle to take one. Trial results show that the drug side effects, high efficiency, but there is also a major drawback, that is, menstrual cycle shortened after medication, thus affecting the popularity of the drug. Therefore, it is necessary to analyze and overcome the shortening cycle of the drug.