There are very many types of family visit contraceptive pills, such as norethindrone family visit tablets, megestrol family visit contraceptive tablets 1, norethindrone family visit contraceptive tablets and so on. 1. Norethindrone birth control tablets, the main function is to inhibit ovarian function, at the same time change the endometrium form and function, so that the cervical mucus thickening, so as to contraceptive, a piece of norethindrone 5.0mg. 2. Methandienone contraceptive tablet No.1, its contraceptive mechanism is to inhibit the hypothalamic gonadotropin-releasing hormone, change the cervical mucus, prevent fertilization, and inhibit the proliferation of the endometrium, a contraceptive pill containing methandienone 2.0mg. 3. Norethindrone family contraceptive tablets, belonging to the progestin preparation, can also prevent ovulation and prevent fertilization of the egg, so that the cervical mucus changes in character, is not conducive to the passage of semen. One tablet contains 3.0mg of norethindrone. Visiting contraceptives are not for everyone, and should not be taken if you have liver or kidney disease, diabetes, or cardiovascular disease. This type of drug has high progestin content and greater side effects, which can cause gastrointestinal symptoms, dizziness, fatigue and so on, and is now rarely used. The specific use of this type of drug needs to be under the guidance of a doctor.