When to use tranexamic acid

The medicine helps reduce bleeding by slowing the breakdown of fibrin, which helps a clot stay in place. It is commonly discussed for heavy menstrual bleeding and may have other specific uses. The right timing depends on the reason for treatment, the formulation, and the instructions you were given; taking extra doses does not make it work more safely or quickly.

Bleeding can have many causes. Tranexamic acid may reduce blood loss without explaining why it happened, so a new, persistent, or unusual pattern deserves medical review.

Confirm the indication, dose, start point, and number of days with a pharmacist or prescriber. Read the instructions for your exact product and do not share tablets. Tell the clinician about kidney disease, a past blood clot, problems with colour vision, pregnancy or breastfeeding, and medicines that affect clotting. Keep a record of bleeding changes and any unwanted effects.

For related information, 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 soaks through protection quickly or keeps increasing, fainting, severe dizziness, intense pain, chest pain, trouble breathing, a painful swollen leg, or sudden vision changes. If bleeding is new during pregnancy or follows a procedure, contact the relevant clinical service promptly rather than relying on self-treatment.

Ask: What is the reason for my bleeding? When should I start and stop treatment? What if I miss a dose? How will we know whether it is helping? Which symptoms require urgent review?