Drug interactions
Arformoterol + Levofloxacin
Severity: Moderate
Arformoterol and Levofloxacin: 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
Levofloxacin prolongs the QT interval and arformoterol, a long-acting beta-agonist, can cause hypokalemia, tachycardia and QTc prolongation. Combined use may increase arrhythmia risk.
What this interaction means in plain words
Arformoterol and Levofloxacin 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; Levofloxacin belongs to Anti Bacterial.
Why it happens
Additive QT prolongation, with beta-agonist-induced hypokalemia contributing.
What to do
Monitor ECG and serum potassium, particularly in patients with cardiac disease or other QT-prolonging drugs. Correct electrolyte abnormalities before and during 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 Levofloxacin
- Dronedarone + Levofloxacin Contraindicated
- Ibutilide + Levofloxacin Contraindicated
- Levofloxacin + Thioridazine Contraindicated
- Levofloxacin + Vandetanib Contraindicated
- Levofloxacin + Ziprasidone Contraindicated
- Adagrasib + Levofloxacin Major
Other interactions of Arformoterol
Frequently asked questions
Can I take Arformoterol with Levofloxacin?
MediHelp rates the interaction as moderate. Arformoterol and Levofloxacin 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. Levofloxacin prolongs the QT interval and arformoterol, a long-acting beta-agonist, can cause hypokalemia, tachycardia and QTc prolongation. Combined use may increase arrhythmia risk.
How serious is the interaction between Arformoterol and Levofloxacin?
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 ECG and serum potassium, particularly in patients with cardiac disease or other QT-prolonging drugs. Correct electrolyte abnormalities before and during therapy.
What other medicines interact with Levofloxacin?
MediHelp also lists interactions of Levofloxacin with, for example, Dronedarone, Ibutilide, Thioridazine. The full list is on the Levofloxacin page.
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