Drug interactions
Alteplase + Tranexamic acid
Severity: Major
Alteplase and Tranexamic acid: major interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Tranexamic acid blocks fibrinolysis and therefore directly opposes the clot-dissolving action of alteplase. This can reduce thrombolytic efficacy, and it is also relevant that tranexamic acid is used to reverse thrombolytic-related bleeding.
What this interaction means in plain words
Alteplase and Tranexamic acid can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Alteplase belongs to Cardiovascular; Tranexamic acid belongs to Cardiovascular.
Why it happens
Pharmacodynamic antagonism: tranexamic acid blocks lysine binding sites on plasminogen, preventing plasmin formation and fibrin degradation.
What to do
Avoid concurrent use when thrombolysis is intended. Use tranexamic acid only deliberately to treat life-threatening alteplase-related bleeding.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Alteplase
- Alteplase + Defibrotide Contraindicated
- Alteplase + Reteplase Contraindicated
- Alteplase + Tenecteplase Contraindicated
- Acetylsalicylic acid + Alteplase Major
- Alteplase + Apixaban Major
- Alteplase + Argatroban Major
Frequently asked questions
Can I take Alteplase with Tranexamic acid?
MediHelp rates the interaction as major. Alteplase and Tranexamic acid can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Tranexamic acid blocks fibrinolysis and therefore directly opposes the clot-dissolving action of alteplase. This can reduce thrombolytic efficacy, and it is also relevant that tranexamic acid is used to reverse thrombolytic-related bleeding.
How serious is the interaction between Alteplase and Tranexamic acid?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use when thrombolysis is intended. Use tranexamic acid only deliberately to treat life-threatening alteplase-related bleeding.
What other medicines interact with Alteplase?
MediHelp also lists interactions of Alteplase with, for example, Defibrotide, Reteplase, Tenecteplase. The full list is on the Alteplase page.
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