Letrozole tablets can be taken either before or after a meal. If the patient’s gastrointestinal tract is weak, it can be taken after meals to reduce the irritation to the gastrointestinal tract after taking the drug. Taking it before or after meals does not affect the blood concentration of the drug or its efficacy. Letrozole Tablets can be used for infertility patients with poor follicular development or ovulation disorders, as well as for anti-estrogen therapy for breast cancer patients. If you are taking Letrozole Tablets for ovulation promotion, you can start taking it on the fifth day of your period for five days and monitor your follicles. If you are taking Letrozole tablets for breast cancer, you should take it continuously and not stop taking it at random, and you should review it regularly and observe the side effects of Letrozole tablets.