Enoxaparin and Tenecteplase: Interaction Details
AI-assisted, pharmacist-reviewed · Source data updated Aug 8, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Enoxaparin
Tenecteplase
No brand names on record
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
What happens
Increased risk of bleeding
Interaction Deep Dive
Whenever possible, drugs that enhance the risk of hemorrhage should be discontinued prior to initiation of enoxaparin. If administered concomitantly with a thrombolytic for the treatment of acute ST-segment elevation myocardial infarction, enoxaparin should be given between 15 minutes before and 30 minutes after the start of fibrinolytic therapy. If co-administration is necessary, monitor closely1.
Why it happens (mechanism)
Additive effects on anticoagulation
Common questions
Can I take Enoxaparin and Tenecteplase together?
Increased risk of bleeding Always confirm with your pharmacist or prescriber before making any change.
How serious is the Enoxaparin and Tenecteplase interaction?
It is rated major. Potentially serious — often needs a change or close monitoring.
How quickly could this interaction happen?
The documented onset is "rapid". Effects can appear quickly, often within about 24 hours of combining the drugs.
How strong is the evidence for this interaction?
The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.
From our Q&A
Real reader questions about these medications, each personally answered by our pharmacist:
Questions for your pharmacist
- Does my dose of Enoxaparin or Tenecteplase need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there a safer alternative to one of these medications for me?
References (1)
- Product Information: Lovenox(R) subcutaneous injection, intravenous injection, enoxaparin sodium subcutaneous injection, intravenous injection. Sanofi-Aventis U.S. LLC (per FDA), Bridgewater, NJ, 2013. DailyMed
Keep reading about Enoxaparin
Keep reading about Tenecteplase
These medications also interact with supplements
Prescription drugs aren't the whole picture — herbal and dietary supplements can interact with them too. From the evidence-graded Natural Medicines database:
major · moderate · minor — check everything you take with our drug–supplement interaction checker.
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