Taking Letrozole for ovulation is started orally on the 5th day of menstruation and taken for 5 days. This must be used only under medical supervision to avoid stimulation of the ovaries. Letrozole is used for anovulation with certain estrogen levels. Adverse reactions such as anti-estrogenic effects on the cervical mucosa, unruptured luteinization, follicular syndrome and poor follicular quality can occur with regular use and patients are not advised to buy and take it on their own. Patients who are particularly interested in having twins during pregnancy preparation or giving ovulation promotion to get pregnant are incorrect, as they may accidentally cause ovarian injury. Paying attention to a reasonable diet and proper exercise can help to get pregnant. Have intercourse on alternate days during ovulation and go to the hospital for ultrasound ovulation testing if necessary.