Middle-aged women who take too much levonorgestrel tablets at night can lead to menstrual disorders or other adverse reactions. 1. menstrual disorders: levonorgestrel tablets are used for emergency contraception, in the absence of protection or other contraceptive methods used in the event of an accidental error, taking this drug can be seen menstrual disorders, which can be manifested in the month of the drug menstruation in advance or delayed, menstrual irregularities during the period to pay attention to rest, pay attention to personal hygiene, and to prevent the occurrence of infection. 2. other: can be seen mild nausea, headache, vomiting, breast swelling, headache and other symptoms, if the symptoms are not very obvious generally do not need to deal with, will disappear on their own. Middle-aged women who take too much levonorgestrel tablets at night may also have other adverse reactions, if the bleeding does not disappear on its own, you should go to the hospital in time to be alert to the presence of ectopic pregnancy, the patient should have more rest, do not self-medication.