If it is the first time to take the pill in the clinic should pay attention to the following matters, first, to grasp the indications. It is not recommended to take birth control pills if you have thrombosis tendency, uterine fibroids, high blood pressure or breast hyperplasia, which is the first precaution. Secondly, the oral contraceptive pill, such as the short-acting contraceptive pill is taken from the 5th day of menstruation, and during the period of taking the pill, it can not be interrupted, but should be taken every day, and has been taken for 21 days, which can be used to prevent pregnancy for one month. Thirdly, you can’t drink alcohol while taking birth control pills. Fourth, it should be noted that it is best to take the pill at a fixed time every day. In addition, it is also important to note that although oral contraceptive pills have a relatively good contraceptive effect, they do not achieve 100 percent contraceptive effect. Once the menopause occurs, it is recommended to rule out the possibility of pregnancy.