What Hormones Are Contained in Birth Control Pills?
Birth control pills essentially belong to hormones. After taking birth control pills, they achieve the effect of contraception by altering the secretion of female hormones. Generally speaking, they belong to estrogens and progesterone, and are combined with other formula drugs for contraception. Birth control pills are mainly divided into three types: long-acting, short-acting, and post-coital contraceptives. Different contraceptives have different formulas, different effects, and different side effects.
Emergency contraceptives mainly contain progesterone. The mechanism of action is basically the same as short-acting contraceptives. They are suitable for women under 40 years old. The main brands include Yuting, Nuoshuang, Baoshiting, and Mifepristone tablets. Generally, the first tablet should be taken within 72 hours after sexual intercourse, and another tablet should be taken after 12 hours. The earlier it is taken, the better the effect. The indication of emergency contraceptives is for emergency contraception in women, which means that they are used when there is no protective measure or when other contraceptive methods accidentally fail. Therefore, it should not be used as a routine contraceptive method. After taking the medicine, reliable contraceptive measures should be taken until the next menstrual period. Generally, emergency contraceptives should not be taken more than 3 times a year and not more than 1 time a month. Taking them repeatedly may lead to menstrual irregularity.
Long-acting contraceptives are usually taken once after lunch on the 5th day of menstruation, and then taken again 20 days later, or taken once on the 5th day and the 10th day of menstruation. After that, take it once a month. The time to take it is based on the time of the second administration, and one tablet is taken every month. Generally, there will be withdrawal bleeding 6 to 12 days after administration. However, long-acting contraceptives are now used less frequently.
