Drug interactions
Levofloxacin + Umeclidinium bromide / vilanterol inhaled
Severity: Moderate
Levofloxacin and Umeclidinium bromide / vilanterol inhaled: 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
Vilanterol, a long-acting beta agonist, can prolong QTc and cause tachycardia, and levofloxacin also prolongs QT. Systemic exposure from inhalation is low, so the combined effect is usually modest, but it may matter in patients with cardiac risk factors.
What this interaction means in plain words
Levofloxacin and Umeclidinium bromide / vilanterol inhaled 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
Additive QT prolongation and beta-adrenergic cardiovascular effects.
What to do
Monitor ECG and potassium in patients with cardiac disease or other QT risk factors. Consider an alternative antibiotic in high-risk patients.
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
Frequently asked questions
Can I take Levofloxacin with Umeclidinium bromide / vilanterol inhaled?
MediHelp rates the interaction as moderate. Levofloxacin and Umeclidinium bromide / vilanterol inhaled 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. Vilanterol, a long-acting beta agonist, can prolong QTc and cause tachycardia, and levofloxacin also prolongs QT. Systemic exposure from inhalation is low, so the combined effect is usually modest, but it may matter in patients with cardiac risk factors.
How serious is the interaction between Levofloxacin and Umeclidinium bromide / vilanterol inhaled?
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 potassium in patients with cardiac disease or other QT risk factors. Consider an alternative antibiotic in high-risk patients.
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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