Drug interactions
Arformoterol + Gentamicin
Severity: Moderate
Arformoterol 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
Arformoterol, a long-acting beta-2 agonist, lowers serum potassium by cellular uptake, and gentamicin may cause renal potassium and magnesium loss. The combination can cause additive hypokalemia with a risk of arrhythmias.
What this interaction means in plain words
Arformoterol 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.
Arformoterol belongs to Respiratory; Gentamicin belongs to Anti Bacterial.
Why it happens
Beta-2 agonist-induced intracellular potassium shift plus aminoglycoside-related renal electrolyte wasting.
What to do
Check potassium and magnesium at baseline and periodically during combined use, and correct abnormalities 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 Gentamicin
- Cidofovir + Gentamicin Contraindicated
- Adefovir + Gentamicin Major
- Amikacin + Gentamicin Major
- Amlodipine-hydrochlorothiazide-valsartan + Gentamicin Major
- Amphotericin b deoxycholate + Gentamicin Major
- Amphotericin b + Gentamicin Major
Other interactions of Arformoterol
Frequently asked questions
Can I take Arformoterol with Gentamicin?
MediHelp rates the interaction as moderate. Arformoterol 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. Arformoterol, a long-acting beta-2 agonist, lowers serum potassium by cellular uptake, and gentamicin may cause renal potassium and magnesium loss. The combination can cause additive hypokalemia with a risk of arrhythmias.
How serious is the interaction between Arformoterol 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: Check potassium and magnesium at baseline and periodically during combined use, and correct abnormalities promptly.
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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