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在全部非手术的避孕方法中,已经证实如果能够正确使用的话,以口服避孕药的失败率最低。近年来,国内外生产的口服避孕药类型日益繁多。但是无论哪一种,都不外乎包括人工合成的雌激素和孕激素,或以孕激素单独成药,或两种复合配方。由于所含剂量不同,使用方法也有所区别,可以作为短效、长效以及探亲等不同情况使用。可以经口服或肌肉注射以及皮下埋藏等不同途径给药。目前在我国使用最广泛的是每日1次,每次一粒的短效口服药。各种类型避孕药的作用机制基本相同。如抑制排卵;改变
In all non-surgical methods of contraception, oral contraceptives have been shown to have the lowest failure rates if used correctly. In recent years, there are more and more types of oral contraceptives produced at home and abroad. But no matter what kind of, are no more than synthetic estrogen and progesterone, or progesterone alone into medicine, or two compound formula. Due to the different dosage, the use of methods are also different, can be used as short-term, long-term and visiting relatives and other different situations. It can be administered orally or intramuscularly as well as subcutaneously in different ways. Currently the most widely used in our country is daily 1 time, each one short-acting oral medication. The mechanism of action of various types of contraceptives is basically the same. Such as inhibiting ovulation; change