This is a double-blind placebo controlled trial to compare the effects of a traditional herbal plant, Persian gulnar (Punica granatum), and Tranexamic acid, on the menstrual blood loss volume, quality of life, duration of menses, side effects and acceptance of treatment. 76 women who come to gynecology clinic of Mostafa-Khomeini hospital and some health centers in Tehran, aged 15-45 years old and complaint of heavy menstrual bleeding will be included and randomly allocated to receive Tranexamic, 500mg Q6h, or Persian gulnar, 500mg Q6h on days 1-5 menstrual cycles. The changes in menstrual blood volume and quality of life as well as side effects of drugs will be studied and compared.