AntifibrinolyticPrescription only
Tranexamic Acid
Tablet or injection
Quick Summary
Tranexamic acid helps blood clots stay in place.
Heavy periods
Bleeding after childbirth or surgery
Nosebleeds and dental bleeding
Medical Uses
Heavy periods: Taken during the period.
Bleeding after childbirth or surgery: In hospital.
Nosebleeds and dental bleeding: Some cases.
How it's taken
For heavy periods, take only during bleeding days.
Your doctor decides the right dose for you and how long to take it.
Your doctor decides the right dose for you. Follow their instructions and the label.
Common Side Effects
Nausea
Sometimes.
Headache
Sometimes.
Back or muscle pain
Sometimes.
Interactions
Combined birth control pills
Higher clot risk.
Critical Warnings
History of blood clots
Black Box Warning: Not suitable.
Kidney problems
Dose adjustment.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- Tranexamic Acid: drug information(opens in a new tab) · MedlinePlus, US National Library of Medicine
- Tranexamic acid: medicine for heavy periods and nosebleeds(opens in a new tab) · NHS