Drug interactions
Gentamicin + Piperacillin
Severity: Moderate
Gentamicin and Piperacillin: 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
The combination is used for synergistic gram-negative coverage. In renal impairment piperacillin can inactivate gentamicin, lowering levels, and both agents carry nephrotoxicity risks in critically ill patients.
What this interaction means in plain words
Gentamicin and Piperacillin 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.
Gentamicin belongs to Anti Bacterial; Piperacillin belongs to Anti Bacterial.
Why it happens
Pharmacodynamic synergy; in renal failure, beta-lactams chemically inactivate aminoglycosides.
What to do
Administer through separate lines and monitor gentamicin concentrations and renal function; handle and assay samples promptly.
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
- Piperacillin + Vancomycin Major
- Acetylsalicylic acid + Piperacillin Moderate
- Amikacin + Piperacillin Moderate
- Antithrombin alfa + Piperacillin Moderate
- Antithrombin iii + Piperacillin Moderate
- Argatroban + Piperacillin Moderate
Other interactions of Gentamicin
- Cidofovir + Gentamicin Contraindicated
- Adefovir + Gentamicin Major
- Amikacin + Gentamicin Major
- Amlodipine-hydrochlorothiazide-valsartan + Gentamicin Major
- Amphotericin b deoxycholate + Gentamicin Major
- Amphotericin b + Gentamicin Major
Frequently asked questions
Can I take Gentamicin with Piperacillin?
MediHelp rates the interaction as moderate. Gentamicin and Piperacillin 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. The combination is used for synergistic gram-negative coverage. In renal impairment piperacillin can inactivate gentamicin, lowering levels, and both agents carry nephrotoxicity risks in critically ill patients.
How serious is the interaction between Gentamicin and Piperacillin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Administer through separate lines and monitor gentamicin concentrations and renal function; handle and assay samples promptly.
What other medicines interact with Piperacillin?
MediHelp also lists interactions of Piperacillin with, for example, Vancomycin, Acetylsalicylic acid, Amikacin. The full list is on the Piperacillin page.
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