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Drug interactions

Amikacin + Piperacillin-tazobactam

Severity: Moderate

Amikacin 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

Antipseudomonal penicillins and aminoglycosides are often combined for synergistic bacterial killing. In patients with renal impairment, piperacillin can inactivate aminoglycosides in vitro and in the patient, lowering aminoglycoside levels.

What this interaction means in plain words

Amikacin 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.

Amikacin belongs to Anti Bacterial; Piperacillin-tazobactam belongs to Anti Bacterial.

Evidence level: Moderate

Why it happens

Pharmacodynamic synergy, plus chemical inactivation of the aminoglycoside by the penicillin, particularly when renal clearance is reduced.

What to do

Do not mix in the same infusion line or syringe and give separately. Monitor amikacin concentrations and renal function, especially in renal impairment.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Amikacin with Piperacillin-tazobactam?

MediHelp rates the interaction as moderate. Amikacin 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. Antipseudomonal penicillins and aminoglycosides are often combined for synergistic bacterial killing. In patients with renal impairment, piperacillin can inactivate aminoglycosides in vitro and in the patient, lowering aminoglycoside levels.

How serious is the interaction between Amikacin 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: Do not mix in the same infusion line or syringe and give separately. Monitor amikacin concentrations and renal function, especially in renal impairment.

What other medicines interact with Piperacillin-tazobactam?

MediHelp also lists interactions of Piperacillin-tazobactam with, for example, Vancomycin, Antithrombin alfa, Antithrombin iii. The full list is on the Piperacillin-tazobactam page.

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