Tranexamic acid to stop a period: what to know

Menstrual bleeding happens as the womb lining leaves the body. Tranexamic acid supports clot stability at the bleeding surface, so it can reduce flow for some people with heavy periods. It does not remove the womb lining, prevent every future period, or explain why bleeding is heavy. Fibroids, endometriosis, hormonal shifts, pregnancy, and clotting conditions are examples of issues a clinician may consider.

Use only the prescribed route and schedule; taking extra medicine will not make it an appropriate period-delay method. Record when bleeding starts, how heavy it is, pain, and any dizziness. Tell a clinician about pregnancy possibility, past clots, kidney disease, and medicines or contraception that may affect clotting. For further detail, read [Tranexamic Acid](/materials/tranexamic-acid/) and [Tranexamic Acid for Heavy Bleeding](/treatments/medical-gynaecology/tranexamic-acid-for-heavy-bleeding/).

Get urgent medical help for bleeding that is difficult to control, faintness, marked weakness, severe pelvic pain, or bleeding during a possible pregnancy. While taking tranexamic acid, chest pain, sudden breathlessness, a painful swollen leg, or new visual symptoms need prompt assessment. Do not wait for the next cycle if these symptoms appear.

Ask whether your goal is reducing flow or delaying a period, which treatment matches that goal, and whether an examination is needed. Confirm how to use the medicine during a cycle and what symptoms require immediate review.