This NHS content is written for people in England. Medicine names, availability, prescribing and services may differ in other countries.
Tranexamic acid (sometimes shortened to TXA) is a medicine that controls bleeding. It helps your blood to clot and is used for nosebleeds and heavy periods.
If you're having a tooth taken out, using tranexamic acid mouthwash can help stop bleeding.
Tranexamic acid can also help if you have a condition that causes swelling under the skin (hereditary angioedema).
If you have any condition that causes you to bleed more than usual, you may need to take tranexamic acid for a few days before having surgery or dental surgery.
Tranexamic acid is available on prescription as:
- tablets
- mouthwash
- injections – usually only given in hospital
Tranexamic acid tablets for heavy periods are also available to buy from pharmacies, for adults aged 18 and over.
View the original NHS website page ↗. Refreshed 19 August 2026.
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