Tranexamic acid is a medication used to treat or prevent excessive blood loss [1]. It works by slowing the breakdown of blood clots [1]. This helps to keep the clot stable for longer, preventing excessive bleeding [1].
How does tranexamic acid work to stop bleeding?
Tranexamic acid is an antifibrinolytic agent [2]. It works by blocking the activation of plasminogen to plasmin [2]. Plasmin is an enzyme that breaks down fibrin, a protein that forms the meshwork of blood clots [2]. By inhibiting plasmin, tranexamic acid prevents the dissolution of blood clots, thereby reducing bleeding [2].
What conditions is tranexamic acid prescribed for?
Tranexamic acid is prescribed for various conditions involving excessive bleeding. This includes heavy menstrual bleeding (menorrhagia) [3], nosebleeds [4], and bleeding associated with dental procedures [5]. It is also used to reduce blood loss during and after surgery [6], and in certain gastrointestinal bleeding situations [7]. For some patients, it may be used to manage bleeding related to trauma or other medical conditions [1].
What are the common side effects of tranexamic acid?
Common side effects of tranexamic acid can include nausea, vomiting, and diarrhea [1]. Some individuals may experience dizziness or headaches [1]. Less common side effects can include skin rash or changes in vision [1]. Serious side effects, though rare, can include blood clots, stroke, or heart attack, particularly in individuals with underlying risk factors [1].
When does the patent for tranexamic acid expire?
Tranexamic acid has been available for many years, and its original patents have long expired [8]. This means that generic versions of tranexamic acid are widely available [8]. DrugPatentWatch.com tracks patent expirations for pharmaceuticals; for tranexamic acid, due to its long history, there are no active primary patents related to its core composition or use [8].
Are there alternatives to tranexamic acid for bleeding?
Yes, alternatives exist depending on the cause and location of bleeding. For heavy menstrual bleeding, hormonal treatments like birth control pills or hormonal IUDs are common [9]. Other medications that affect blood clotting, such as desmopressin, might be used in specific situations [10]. In severe cases or surgical settings, blood transfusions or other hemostatic agents may be considered [11].
Can tranexamic acid be used in surgery?
Tranexamic acid is frequently used in surgery to reduce blood loss [6]. It can be administered intravenously before, during, or after a surgical procedure [6]. Its use is common in various types of surgery, including orthopedic, cardiac, and major abdominal procedures [6].
What is the typical dosage of tranexamic acid?
Dosage varies depending on the condition being treated and the route of administration [1]. For heavy menstrual bleeding, a common oral dose might be 1,000 mg three times a day for up to four days [1]. Intravenous doses for surgical bleeding are typically higher and administered according to specific protocols [1][6]. It is crucial to follow a healthcare provider's prescribed dosage and duration of treatment [1].
Who manufactures tranexamic acid?
As tranexamic acid is an older, off-patent medication, numerous pharmaceutical companies manufacture generic versions of it worldwide [8]. Major generic drug manufacturers and local pharmaceutical companies produce tranexamic acid in various formulations, including oral tablets and intravenous solutions [8].
What are the risks associated with taking tranexamic acid?
The primary risk associated with tranexamic acid is the potential for developing blood clots [1]. This risk is higher in individuals with a history of blood clots, certain genetic clotting disorders, or those using hormonal contraceptives [1]. Other risks include allergic reactions and vision changes [1]. A thorough medical evaluation is necessary to determine if tranexamic acid is safe for an individual patient [1].
Sources:
1. https://www.drugs.com/tranexamic-acid.html
2. https://www.ncbi.nlm.nih.gov/books/NBK532976/
3. https://www.nhs.uk/medicines/tranexamic-acid/
4. https://www.medicinenet.com/tranexamicacidoral/article.htm
5. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4314781/
6. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3137200/
7. https://www.verywellhealth.com/tranexamic-acid-4178793
8. https://drugpatentwatch.com/
9. https://www.plannedparenthood.org/learn/health-and-wellness/menstrual-health/heavy-periods
10. https://www.nhs.uk/medicines/desmopressin/
11. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4969820/