Drug interactions
Perphenazine + Vilanterol / fluticasone furoate inhaled
Severity: Moderate
Perphenazine and Vilanterol / fluticasone furoate 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, may prolong the QT interval and cause tachycardia, and perphenazine adds QT prolongation. Systemic exposure from inhalation is low, so the effect is usually modest but matters in patients with cardiac risk.
What this interaction means in plain words
Perphenazine and Vilanterol / fluticasone furoate 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 cardiovascular effects of beta-agonist stimulation.
What to do
Monitor ECG and heart rate in patients with cardiac risk factors and correct hypokalemia and hypomagnesemia. Consider an alternative inhaled therapy if QT risk is high.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Perphenazine and Vilanterol / fluticasone furoate inhaled, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Perphenazine
- Ibutilide + Perphenazine Contraindicated
- Perphenazine + Pimozide Contraindicated
- Perphenazine + Thioridazine Contraindicated
- Adagrasib + Perphenazine Major
- Alfentanil + Perphenazine Major
- Amiodarone + Perphenazine Major
Frequently asked questions
Can I take Perphenazine with Vilanterol / fluticasone furoate inhaled?
MediHelp rates the interaction as moderate. Perphenazine and Vilanterol / fluticasone furoate 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, may prolong the QT interval and cause tachycardia, and perphenazine adds QT prolongation. Systemic exposure from inhalation is low, so the effect is usually modest but matters in patients with cardiac risk.
How serious is the interaction between Perphenazine and Vilanterol / fluticasone furoate 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 heart rate in patients with cardiac risk factors and correct hypokalemia and hypomagnesemia. Consider an alternative inhaled therapy if QT risk is high.
What other medicines interact with Perphenazine?
MediHelp also lists interactions of Perphenazine with, for example, Ibutilide, Pimozide, Thioridazine. The full list is on the Perphenazine page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
