Drug interactions
Aspirin rectal + Enoxaparin
Severity: Major
Aspirin rectal and Enoxaparin: major interaction.
Last updated Sources: US FDA label
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
Rectal aspirin is absorbed systemically and irreversibly inhibits platelet aggregation. Together with enoxaparin it increases bleeding risk, including gastrointestinal bleeding and neuraxial hematoma.
What this interaction means in plain words
Aspirin rectal and Enoxaparin 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.
Why it happens
Additive hemostatic effect: irreversible COX-1 platelet inhibition plus enoxaparin's anti-Xa activity.
What to do
Combine only when clearly indicated, such as in acute coronary syndromes, and monitor for bleeding and hemoglobin. Take extra care around neuraxial procedures.
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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References
Other interactions of Enoxaparin
- Defibrotide + Enoxaparin Contraindicated
- Enoxaparin + Ketorolac Contraindicated
- Enoxaparin + Mifepristone Contraindicated
- Abciximab + Enoxaparin Major
- Aceclofenac + Enoxaparin Major
- Acetylsalicylic acid + Enoxaparin Major
Frequently asked questions
Can I take Aspirin rectal with Enoxaparin?
MediHelp rates the interaction as major. Aspirin rectal and Enoxaparin 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. Rectal aspirin is absorbed systemically and irreversibly inhibits platelet aggregation. Together with enoxaparin it increases bleeding risk, including gastrointestinal bleeding and neuraxial hematoma.
How serious is the interaction between Aspirin rectal and Enoxaparin?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Combine only when clearly indicated, such as in acute coronary syndromes, and monitor for bleeding and hemoglobin. Take extra care around neuraxial procedures.
What other medicines interact with Enoxaparin?
MediHelp also lists interactions of Enoxaparin with, for example, Defibrotide, Ketorolac, Mifepristone. The full list is on the Enoxaparin page.
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