Taking selenium yeast tablets generally does not cause delayed menstruation, it is recommended to avoid anxiety, maintain a good state of mind, timely consultation to identify the causes of delayed menstruation, symptomatic treatment. Selenium yeast tablets are mainly suitable for patients with low selenium caused by tumors, liver disease, cardiovascular and cerebrovascular disease patients. Selenium in the body can protect the integrity of cell membranes and enhance the body’s immunity, and oral selenium yeast tablets for women generally do not have a significant impact on menstruation. Patients who have delayed menstruation, consider excessive anxiety, pregnancy, polycystic ovary syndrome and other related, it is recommended to actively treat the primary disease, maintain a good state of mind, relaxation, and establish good living habits. There are many reasons for delayed menstruation, it is recommended to consult the hospital, complete the relevant examinations, clarify the cause of the disease, and carry out targeted treatment and therapy under the guidance of the doctor.