Letrozole for ovulation should be started within 5 days of menstruation and taken for 5 consecutive days, and should be taken under the supervision of a doctor. Letrozole tablets are effective ovulation stimulating drugs with a high ovulation rate, favoring single follicle development and no adverse effect on the growth of the endometrium. It promotes ovulation in women, controls endocrine imbalance in the body through hormonal regulation and stimulates the ovaries, thus promoting ovulation and increasing the success rate of pregnancy. 5 days before menstruation, the ovary has begun to prepare for new follicles, the drug can promote follicular ovulation, 1 week after the drug, as early as possible to arrange for sexual intercourse, can make Letrozole Tablet efficacy to achieve the best, generally in the 2nd day after stopping the drug should start to do ultrasound observation of follicular development, observation of the presence or absence of ovulation, according to the situation of ovulation to adjust the situation of coitus, can improve the chances of conception. However, if you find yourself suffering from polycystic ovaries, you need to promptly regulate menstruation treatment, if you can restore normal menstruation, then you can take ovulation drugs to promote ovulation treatment.