Synopsis：Contraceptives generally refer to oral contraceptives, including female oral contraceptives and male oral contraceptives. The principle of contraception is to change cervical mucus by inhibiting ovulation, so that sperm is not easy to penetrate; Or make the uterine gland reduce the production of liver sugar, so that the blastocyst is not easy to survive; Or change the activity mode of uterus and fallopian tube, hinder the transportation of fertilized eggs, so that sperm and eggs can not combine to form fertilized eggs, and finally achieve the purpose of contraception. Contraceptives are divided into three categories according to chemical organization. The first category is progesterone derivatives, such as megestrone, pseudoprogesterone, chlorprogesterone, etc; The second is estrogen derivatives, such as ethinylestradiol, ethinylestradiol cyclopentyl ether, valeric acid ethinylestradiol, etc; The third category is testosterone derivatives, which are derivatives after testosterone is methylated at position 19. They have strong progesterone effects, such as norethisterone, 18 methyl norethisterone, diacetylinol, norethisterone heptanate, etc.
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Summary
Contraceptives generally refer to oral contraceptives, including female oral contraceptives and male oral contraceptives. The principle of contraception is to change cervical mucus by inhibiting ovulation, so that sperm is not easy to penetrate; Or make the uterine gland reduce the production of liver sugar, so that the blastocyst is not easy to survive; Or change the activity mode of uterus and fallopian tube, hinder the transportation of fertilized eggs, so that sperm and eggs can not combine to form fertilized eggs, and finally achieve the purpose of contraception. Contraceptives are divided into three categories according to chemical organization. The first category is progesterone derivatives, such as megestrone, pseudoprogesterone, chlorprogesterone, etc; The second is estrogen derivatives, such as ethinylestradiol, ethinylestradiol cyclopentyl ether, valeric acid ethinylestradiol, etc; The third category is testosterone derivatives, which are derivatives after testosterone is methylated at position 19. They have strong progesterone effects, such as norethisterone, 18 methyl norethisterone, diacetylinol, norethisterone heptanate, etc.
Manufacturing
