Drug interactions
Foscarnet + Umeclidinium-vilanterol
Severity: Moderate
Foscarnet and Umeclidinium-vilanterol: 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
Foscarnet can prolong the QT interval and cause hypokalemia, hypocalcemia and hypomagnesemia. Vilanterol may add tachycardia and further lower potassium, increasing arrhythmia risk.
What this interaction means in plain words
Foscarnet and Umeclidinium-vilanterol 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.
Foscarnet belongs to Anti Virals; Umeclidinium-vilanterol belongs to Respiratory.
Why it happens
Additive QT prolongation and electrolyte disturbance with beta-agonist cardiac stimulation.
What to do
Monitor electrolytes closely and replace deficits during foscarnet therapy. Obtain an ECG in patients with cardiac risk factors.
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 Umeclidinium-vilanterol
Other interactions of Foscarnet
- Cidofovir + Foscarnet Contraindicated
- Foscarnet + Pimozide Contraindicated
- Foscarnet + Thioridazine Contraindicated
- Foscarnet + Vandetanib Contraindicated
- Adagrasib + Foscarnet Major
- Adefovir + Foscarnet Major
Frequently asked questions
Can I take Foscarnet with Umeclidinium-vilanterol?
MediHelp rates the interaction as moderate. Foscarnet and Umeclidinium-vilanterol 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. Foscarnet can prolong the QT interval and cause hypokalemia, hypocalcemia and hypomagnesemia. Vilanterol may add tachycardia and further lower potassium, increasing arrhythmia risk.
How serious is the interaction between Foscarnet and Umeclidinium-vilanterol?
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 electrolytes closely and replace deficits during foscarnet therapy. Obtain an ECG in patients with cardiac risk factors.
What other medicines interact with Umeclidinium-vilanterol?
MediHelp also lists interactions of Umeclidinium-vilanterol with, for example, Aclidinium, Amiodarone, Amitriptyline. The full list is on the Umeclidinium-vilanterol page.
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