The dangers of oral long-acting contraceptives are as follows: 1. Because long-acting contraceptives are a combination of estrogen and progestin, they will cause the endometrium to become thinner, resulting in a decrease in menstrual flow and even the clinical possibility of amenorrhea. 2. They will cause water and sodium retention in the body, resulting in weight gain and obesity. 3. They will cause discoloration on the face, mainly due to the action of estrogen. It is recommended that before taking the oral long-acting contraceptive pill, you must do the appropriate tests, such as liver and kidney function tests, sex hormone six tests, and it is also recommended to do ultrasound examinations, mainly to exclude the possibility of uterine fibroids, before you can take the long-acting contraceptive pill clinically. In the process of eating it is recommended that it is best to do a checkup once every six months to understand the basic health condition of the body.