Drug interactions
Arformoterol + Foscarnet
Severity: Moderate
Arformoterol and Foscarnet: 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
Both can prolong the QT interval, and arformoterol can lower serum potassium. Foscarnet's electrolyte effects add to the risk of arrhythmia.
What this interaction means in plain words
Arformoterol and Foscarnet 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; Foscarnet belongs to Anti Virals.
Why it happens
Additive QT prolongation, with beta-agonist hypokalemia and foscarnet-induced electrolyte disturbances.
What to do
Monitor the ECG and serum potassium, magnesium and calcium, 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 Foscarnet
- Cidofovir + Foscarnet Contraindicated
- Foscarnet + Pimozide Contraindicated
- Foscarnet + Thioridazine Contraindicated
- Foscarnet + Vandetanib Contraindicated
- Adagrasib + Foscarnet Major
- Adefovir + Foscarnet Major
Other interactions of Arformoterol
Frequently asked questions
Can I take Arformoterol with Foscarnet?
MediHelp rates the interaction as moderate. Arformoterol and Foscarnet 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. Both can prolong the QT interval, and arformoterol can lower serum potassium. Foscarnet's electrolyte effects add to the risk of arrhythmia.
How serious is the interaction between Arformoterol and Foscarnet?
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 the ECG and serum potassium, magnesium and calcium, and correct abnormalities promptly.
What other medicines interact with Foscarnet?
MediHelp also lists interactions of Foscarnet with, for example, Cidofovir, Pimozide, Thioridazine. The full list is on the Foscarnet page.
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