Drug interactions
Telavancin + Trifluoperazine
Severity: Moderate
Telavancin and Trifluoperazine: 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
Trifluoperazine is a phenothiazine antipsychotic that can prolong the QT interval, and telavancin may add to this effect. Together they raise the risk of ventricular arrhythmia including torsades de pointes.
What this interaction means in plain words
Telavancin and Trifluoperazine 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 pharmacodynamic QT prolongation, with trifluoperazine blocking cardiac hERG potassium channels.
What to do
Check a baseline ECG and electrolytes and monitor the QTc during combined therapy. Consider an alternative antibiotic in patients with other QT 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 Telavancin
- Telavancin + Thioridazine Contraindicated
- Adagrasib + Telavancin Major
- Amiodarone + Telavancin Major
- Amisulpride + Telavancin Major
- Anagrelide + Telavancin Major
- Arsenic trioxide + Telavancin Major
Frequently asked questions
Can I take Telavancin with Trifluoperazine?
MediHelp rates the interaction as moderate. Telavancin and Trifluoperazine 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. Trifluoperazine is a phenothiazine antipsychotic that can prolong the QT interval, and telavancin may add to this effect. Together they raise the risk of ventricular arrhythmia including torsades de pointes.
How serious is the interaction between Telavancin and Trifluoperazine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check a baseline ECG and electrolytes and monitor the QTc during combined therapy. Consider an alternative antibiotic in patients with other QT risk factors.
What other medicines interact with Telavancin?
MediHelp also lists interactions of Telavancin with, for example, Thioridazine, Adagrasib, Amiodarone. The full list is on the Telavancin page.
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