Drug interactions
Heparin + Piperacillin-tazobactam
Severity: Moderate
Heparin 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
High-dose piperacillin can impair platelet function and may add to the bleeding risk of heparin. The effect is usually modest but may matter in patients with other bleeding risks.
What this interaction means in plain words
Heparin 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.
Heparin belongs to Cardiovascular; Piperacillin-tazobactam belongs to Anti Bacterial.
Why it happens
Piperacillin impairs platelet aggregation, adding to the antithrombotic effect of heparin.
What to do
Monitor aPTT or anti-Xa, platelet count and signs of bleeding during combined therapy.
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
Other interactions of Heparin
- Defibrotide + Heparin Contraindicated
- Heparin + Ketorolac Contraindicated
- Heparin + Oritavancin Contraindicated
- Acemetacin + Heparin Major
- Acetylsalicylic acid + Heparin Major
- Alteplase + Heparin Major
Frequently asked questions
Can I take Heparin with Piperacillin-tazobactam?
MediHelp rates the interaction as moderate. Heparin 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. High-dose piperacillin can impair platelet function and may add to the bleeding risk of heparin. The effect is usually modest but may matter in patients with other bleeding risks.
How serious is the interaction between Heparin 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 aPTT or anti-Xa, platelet count and signs of bleeding during combined therapy.
What other medicines interact with Piperacillin-tazobactam?
MediHelp also lists interactions of Piperacillin-tazobactam with, for example, Vancomycin, Amikacin, Antithrombin alfa. The full list is on the Piperacillin-tazobactam page.
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