Drug interactions
Antithrombin alfa + Piperacillin-tazobactam
Severity: Moderate
Antithrombin alfa and Piperacillin-tazobactam: moderate 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
Piperacillin can impair platelet function and, at high doses, may contribute to bleeding. Antithrombin enhances heparin-mediated anticoagulation, so bleeding risk could be additive. The clinical significance is uncertain and likely modest.
What this interaction means in plain words
Antithrombin alfa and Piperacillin-tazobactam can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive effects on hemostasis: penicillin-induced platelet dysfunction combined with enhanced antithrombin-mediated anticoagulation.
What to do
Monitor for bleeding and coagulation parameters such as aPTT or anti-Xa when used with heparin. Adjust anticoagulant dosing as clinically indicated.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Piperacillin-tazobactam
Frequently asked questions
Can I take Antithrombin alfa with Piperacillin-tazobactam?
MediHelp rates the interaction as moderate. Antithrombin alfa and Piperacillin-tazobactam can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Piperacillin can impair platelet function and, at high doses, may contribute to bleeding. Antithrombin enhances heparin-mediated anticoagulation, so bleeding risk could be additive. The clinical significance is uncertain and likely modest.
How serious is the interaction between Antithrombin alfa and Piperacillin-tazobactam?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for bleeding and coagulation parameters such as aPTT or anti-Xa when used with heparin. Adjust anticoagulant dosing as clinically indicated.
What other medicines interact with Piperacillin-tazobactam?
MediHelp also lists interactions of Piperacillin-tazobactam with, for example, Vancomycin, Amikacin, Antithrombin iii. The full list is on the Piperacillin-tazobactam page.
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