Drug interactions
Aspirin / citric acid / sodium bicarbonate + Gentamicin
Severity: Moderate
Aspirin / citric acid / sodium bicarbonate and Gentamicin: 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 aspirin component, taken at analgesic doses, can reduce renal prostaglandin-mediated perfusion and may add to gentamicin nephrotoxicity. The sodium bicarbonate component also alkalinizes urine, which can slightly alter aminoglycoside activity and handling.
What this interaction means in plain words
Aspirin / citric acid / sodium bicarbonate and Gentamicin 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
Salicylate inhibition of renal prostaglandin synthesis reduces renal blood flow and aminoglycoside clearance.
What to do
Monitor renal function and gentamicin levels, and avoid repeated use of the effervescent analgesic in patients with renal impairment or dehydration.
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 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 Aspirin / citric acid / sodium bicarbonate with Gentamicin?
MediHelp rates the interaction as moderate. Aspirin / citric acid / sodium bicarbonate and Gentamicin 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 aspirin component, taken at analgesic doses, can reduce renal prostaglandin-mediated perfusion and may add to gentamicin nephrotoxicity. The sodium bicarbonate component also alkalinizes urine, which can slightly alter aminoglycoside activity and handling.
How serious is the interaction between Aspirin / citric acid / sodium bicarbonate and Gentamicin?
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 renal function and gentamicin levels, and avoid repeated use of the effervescent analgesic in patients with renal impairment or dehydration.
What other medicines interact with Gentamicin?
MediHelp also lists interactions of Gentamicin with, for example, Cidofovir, Adefovir, Amikacin. The full list is on the Gentamicin page.
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