If a patient misses a dose while taking Maflon for treatment of a disease, the patient needs to choose an appropriate treatment plan based on the time of the missed dose. If the patient is in the third week of taking the missed dose, you can choose to stop the use of the drug, after the onset of menstruation to start a new cycle of taking the drug. As the drug cycle is coming to an end, the drug has been used in the body for a long time and has reached a certain concentration, stopping the drug will not cause significant impact on the treatment. If the patient is not in the third week of the missed dose, you can choose to make up for the dose, that is, in the morning of the day after the missed dose of oral, once in a while the missed dose does not affect the therapeutic effect, but can not be missed continuously, so as to avoid the occurrence of vaginal bleeding condition.