Letrozole tablets are an ovulation stimulating medication that can have certain benefits if taken at night, such as avoiding missed doses. Taking ovulation drugs at night can reduce the chance of missing doses, because most patients are more likely to miss doses during the day, due to busy work or the need to deal with other things, so taking them at night is conducive to the continuity of treatment. However, it does not mean that the ovulation drugs must be taken at night, you can choose the right time to take according to the advice of professional doctors. It is important to note that ovulation drugs may cause bloating, nausea, vomiting and other phenomena, so you need to follow the doctor’s instructions to take medication, do not arbitrarily use.