List of products in the National Drug Code with proprietary name . This medication is used to treat heavy bleeding during your menstrual period. Tranexamic acid works by slowing the breakdown of blood clots, which helps to prevent prolonged bleeding. It belongs to a class of drugs known as antifibrinolytics. Tranexamic acid is not a hormone. It does not treat other menstrual or pre-menstrual symptoms. It does not stop your period. It is not a form of birth control and does not protect against sexually transmitted diseases.