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Tranexamic Acid: Uses, Dosage, Side Effects & Brands | MedexInfo

Tranexamic Acid: Uses, Dosage, Side Effects & Brands | MedexInfo

Tranexamic Acid

Rx
Generic NameTranexamic Acid
Therapeutic ClassAntifibrinolytic Agent
Common Strength250 mg, 500 mg (tablet); 500 mg/5 mL (injection)
Max / 24h4 g (oral)
PregnancyUse if benefit outweighs risk
Indications ▼
Heavy menstrual bleeding (menorrhagia)
Prevention and treatment of surgical bleeding
Trauma-related hemorrhage
Bleeding disorders with hyperfibrinolysis
Hereditary angioedema (prophylaxis)
Mechanism & Pharmacokinetics ▼
Mechanism: Tranexamic acid is a synthetic lysine analogue that inhibits fibrinolysis by reversibly blocking lysine-binding sites on plasminogen, preventing its conversion to plasmin and stabilizing formed clots.
Pharmacokinetics: Well absorbed orally. Minimal metabolism. Eliminated primarily unchanged via renal excretion. Plasma half-life is approximately 2–3 hours.
Dosage & Administration ▼
IndicationDoseFrequency
Menorrhagia1–1.5 g2–3 times daily for up to 5 days
Postoperative / Trauma bleeding500 mg–1 g (IV)Every 6–8 hours as needed
Hereditary angioedema1–1.5 g2–3 times daily
Note: Dose adjustment required in renal impairment.
Side Effects ▼
Nausea, vomiting, diarrhea
Abdominal discomfort
Dizziness, headache
Visual disturbances (rare)
Rare: thromboembolic events, seizures (high-dose IV)
Contraindications ▼
Active intravascular clotting
History of thromboembolic disease
Severe renal impairment (without dose adjustment)
Subarachnoid hemorrhage
Hypersensitivity to tranexamic acid
Drug Interaction ▼
Hormonal contraceptives: increased risk of thrombosis
Other procoagulant agents: additive thrombotic risk
Thrombolytics: antagonized effect
Pregnancy & Lactation ▼
Can be used if clinically indicated
No strong evidence of teratogenicity
Excreted in breast milk in small amounts; generally considered safe
Clinical / Research Summary ▼
Clinical Role: Key antifibrinolytic used to reduce bleeding without affecting coagulation.
Evidence: Proven mortality benefit in trauma and postpartum hemorrhage when used early.
Limitation: Thrombotic risk in predisposed patients.
Monitoring: Renal function, visual symptoms, thrombotic signs.
Patient Counseling Points ▼
Take exactly as prescribed
Report visual changes or leg swelling immediately
Do not exceed recommended duration for menstrual bleeding
Inform doctor if using hormonal contraceptives
Storage & Handling ▼
Store below 30°C
Protect from light and moisture
Keep out of reach of children

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