Tranexamic acid to stop menstrual bleeding: what to know

Tranexamic acid helps stabilise blood clots where the womb lining is shedding. It is generally used around the days of menstrual bleeding, according to a prescriber's directions. It may lessen flow without changing the underlying reason for heavy periods, such as fibroids, adenomyosis, hormonal changes, a bleeding disorder, or pregnancy-related bleeding. A review is useful when heavy periods are new, worsening, or affecting daily activities.

Take or use the prescribed medicine exactly as directed and do not share it with someone else. Tell the prescriber about previous blood clots, kidney problems, vision changes, medicines that affect clotting, and any possibility of pregnancy. Keep a note of bleeding, pain, dizziness, and missed doses so the treatment can be assessed. Learn more in [Tranexamic Acid](/materials/tranexamic-acid/) and [Tranexamic Acid for Heavy Bleeding](/treatments/medical-gynaecology/tranexamic-acid-for-heavy-bleeding/).

Seek urgent care if bleeding is soaking through protection repeatedly, you feel faint or short of breath, severe pelvic pain occurs, or pregnancy is possible. Get emergency help for sudden chest pain, trouble breathing, one-sided leg swelling, or a new vision problem while taking the medicine. These symptoms need assessment rather than a dose change at home.

Ask what may be causing the heavy bleeding, when to begin treatment, how long to continue it, and what symptoms mean you should stop and call. Ask whether you need an examination or blood tests to check for anaemia.