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Quick facts
- Drug class
- Antifibrinolytic Agent [EPC]
- How it is given
- intravenous
- Type
- human prescription drug
- RxNorm ID
- 238720
We do not publish dosing. How much of this medicine to take, how often, and for how long depends on your age, weight, kidney and liver function, other conditions and other medicines. That is a decision for the person who prescribes or dispenses it. Follow the directions on your own pack and ask your pharmacist if anything is unclear.
What it is used to treat
Tranexamic acid injection, USP is indicated in patients with hemophilia for short-term use (2 to 8 days) to reduce or prevent hemorrhage and reduce the need for replacement therapy during and following tooth extraction. Tranexamic acid injection is an antifibrinolytic indicated in patients with hemophilia for short-term use (2 to 8 days) to reduce or prevent hemorrhage and reduce the need for replacement therapy during and following tooth extraction. ( 1 )
About this medicine
Tranexamic acid is trans-4-(aminomethyl)cyclohexanecarboxylic acid, an antifibrinolytic agent. Tranexamic acid, USP is a white crystalline powder. The structural formula is Empirical Formula: C 8 H 15 NO 2 Molecular Weight: 157.2 Each mL of the sterile solution for intravenous injection contains 100 mg tranexamic acid, USP and Water for Injection to 1 mL. The aqueous solution for injection has a pH of 6.5 to 8.0. Structural Formula
How it works
12.1 Mechanism of Action Tranexamic acid is a synthetic lysine amino acid derivative, which diminishes the dissolution of hemostatic fibrin by plasmin. In the presence of tranexamic acid, the lysine receptor binding sites of plasmin for fibrin are occupied, preventing binding to fibrin monomers, thus preserving and stabilizing fibrin's matrix structure. The antifibrinolytic effects of tranexamic acid are mediated by reversible interactions at multiple binding sites within plasminogen. Native human plasminogen contains 4 to 5 lysine binding sites with low affinity for tranexamic acid (Kd = 750 μmol/L) and 1 with high affinity (Kd = 1.1 μmol/L). The high affinity lysine site of plasminogen is involved in its binding to fibrin. Saturation of the high affinity binding site with tranexamic acid displaces plasminogen from the surface of fibrin. Although plasmin may be formed by conformational changes in plasminogen, binding to and dissolution of the fibrin matrix is inhibited.
Who should not take it
Tranexamic acid injection, USP is contraindicated: In patients with subarachnoid hemorrhage. Anecdotal experience indicates that cerebral edema and cerebral infarction may be caused by tranexamic acid injection in such patients. In patients with active intravascular clotting [see Warnings and Precautions ( 5.1 )] . In patients with hypersensitivity to tranexamic acid or any of the ingredients [see Warnings and Precautions ( 5.4 )] . In patients with subarachnoid hemorrhage, due to risk of cerebral edema and cerebral infarction. ( 4 ) In patients with active intravascular clotting. ( 4 ) In patients with severe hypersensitivity reactions to tranexamic acid or any of the ingredients. ( 4 )
Warnings and cautions
Risk of Thrombosis with Concomitant Use of Factor IX: Avoid concomitant use. ( 5.1 ) Risk of Medication Errors Due to Incorrect Route of Administration: FOR INTRAVENOUS USE ONLY. ( 5.2 ) Seizures: Inadvertent injection into neuraxial system may result in seizures. ( 5.3 ) Hypersensitivity Reactions: In case of severe reaction, discontinue use and seek immediate medical attention. ( 5.4 ) Visual Disturbances: Visual or ocular adverse effects may occur. Discontinue use if visual or ocular symptoms occur. ( 5.5 ) Dizziness: Advise patients not to drive if dizziness occurs. ( 5.6 ) 5.1 Thromboembolic Risk Tranexamic acid injection is contraindicated in patients with active intravascular clotting. Tranexamic acid is an antifibrinolytic and may increase the risk of thromboembolic events. Venous and arterial thrombosis or thromboembolism has been reported in patients treated with tranexamic acid injection. Avoid concomitant use of tranexamic acid injection and medical products that are pro-thrombotic, as the risk of thrombosis may be increased. These medications include but are not limited to, Factor IX Complex concentrates, Anti-inhibitor Coagulant concentrates, and hormonal contraceptives [see Drug Interactions ( 7.1 ), Use in Specific Populations ( 8.3 )] . 5.2 Risk of Medication Errors Due to Incorrect Route of Administration Tranexamic acid injection is for intravenous use only. Serious adverse reactions including seizures and cardiac arrythmias have occurred when tranexamic acid injection was inadvertently administered intrathecally instead of intravenously. Confirm the correct route of administration for tranexamic acid injection and avoid confusion with other injectable solutions that might be administered at the same time as tranexamic acid injection. Syringes containing tranexamic acid injection should be clearly labeled with the intravenous route of administration. 5.3 Seizures Tranexamic acid injection may cause seizures, including focal and generalized seizures. […]
Reported side effects
The following clinically significant adverse reactions are described elsewhere in the labeling: Thromboembolic Risk [see Warnings and Precautions ( 5.1 )] Seizures [see Warnings and Precautions ( 5.3 )] Hypersensitivity Reactions [see Warnings and Precautions ( 5.4 )] Visual Disturbances [see Warnings and Precautions ( 5.5 )] Dizziness [see Warnings and Precautions ( 5.6 )] Most common adverse reactions are nausea, vomiting, diarrhea, allergic dermatitis, giddiness, hypotension, and thromboembolic events. ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Avenacy Inc. at 1-855-283-6229 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.2 Postmarketing Experience The following adverse reactions have been identified during postapproval use of tranexamic acid. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Gastrointestinal disturbances (nausea, vomiting, diarrhea) may occur and may resolve with dose-reduction. Allergic dermatitis and giddiness have been reported. Hypotension has been reported when intravenous injection is too rapid. Thromboembolic events (e.g., deep vein thrombosis, pulmonary embolism, cerebral thrombosis, acute renal cortical necrosis, and central retinal artery, vein obstruction and cases associated with concomitant use of combination hormonal contraceptives) have been rarely reported in patients receiving tranexamic acid for indications other than hemorrhage prevention in patients with hemophilia. Convulsion, cromatopsia, and visual impairment have also been reported. Anaphylaxis or anaphylactoid reactions have been reported that are suggestive of a causal relationship.
Interactions with other medicines
Prothrombotic Medical Products: Avoid concomitant use, can further increase the risk of thromboembolic adverse reactions associated with tranexamic acid. ( 5.1 , 7.1 , 8.3 ) 7.1 Prothrombotic Medical Products Avoid concomitant use of tranexamic acid injection with medical products that are prothrombotic because concomitant use can further increase the risk of thromboembolic adverse reactions associated with tranexamic acid [see Warnings and Precautions ( 5.1 ), Use in Specific Populations ( 8.3 )] .
Use in specific groups
8.1 Pregnancy Risk Summary Available data from published studies, case series and case reports with tranexamic acid use in pregnant women in the second and third trimester and at the time of delivery have not clarified whether there is a drug-associated risk of miscarriage or adverse maternal or fetal outcomes. There are 2 (0.02%) infant cases with structural abnormalities that resulted in death when tranexamic acid was used during conception or the first trimester of pregnancy; however, due to other confounding factors the risk of major birth defects with use of tranexamic acid during pregnancy is not clear. Tranexamic acid is known to pass the placenta and appears in cord blood at concentrations approximately equal to maternal concentration (see Data ) . Reproduction studies performed in mice, rats, and rabbits have not revealed any adverse effects on the fetus due to tranexamic acid administered during organogenesis. Doses examined were multiples of up to 3 times (mouse), 6 times (rat), and 3 times (rabbit) the maximum human dose based on body surface area in the mouse, rat, and rabbit, respectively (see Data ) . The estimated background risk for major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in the clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively. It is not known whether tranexamic acid use in pregnant women may cause a drug-associated risk of miscarriage or adverse maternal or fetal outcomes. For decisions regarding the use of tranexamic acid injection during pregnancy, the potential risk of tranexamic acid injection administration on the fetus should always be considered along with the mother's clinical need for tranexamic acid injection; an accurate risk-benefit evaluation should drive the treating physician's decision. Data Human Data Tranexamic acid passes through the placenta. […]
If too much is taken
Cases of overdosage of tranexamic acid injection have been reported. Based on these reports, symptoms of overdosage may be gastrointestinal, e.g., nausea, vomiting, diarrhea; hypotensive, e.g., orthostatic symptoms; thromboembolic, e.g., arterial, venous, embolic; neurologic, e.g., visual impairment, convulsions, headache, mental status changes; myoclonus; and rash.
Storing it safely
Storage Conditions Store at 20º to 25°C (68º to 77°F); excursions permitted between 15° and 30°C (59° and 86°F). [See USP Controlled Room Temperature.] Discard unused portion. Sterile, Nonpyrogenic, Preservative-free. The container closure is not made with natural rubber latex.
Before you take anything new
Tell your pharmacist or doctor about every medicine you take — including ones bought without a prescription, herbal products and supplements. Interactions are one of the most common avoidable causes of harm from medicines, and a pharmacist can check your full list in a couple of minutes.
This page is built from the openFDA record of the U.S. Food and Drug Administration's approved labelling for this product, effective 15 March 2024. Label text has been shortened and reformatted for readability; safety wording has not been altered in meaning. FDA labelling describes products approved in the United States — brand names, strengths, formulations and approved uses may differ in your country. Always read the leaflet that comes with your own pack. PocketsInfo is not affiliated with, and is not endorsed by, the FDA. Retrieved 2026-07-30.