Drug interactions
Idarubicin + Trastuzumab
Severity: Major
Idarubicin and Trastuzumab: major 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
Trastuzumab-associated cardiomyopathy is more frequent and severe when combined with or given after anthracyclines. Idarubicin shares the cardiotoxic class effect, so the combination carries a significant risk of heart failure.
What this interaction means in plain words
Idarubicin and Trastuzumab can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Idarubicin belongs to Oncology; Trastuzumab belongs to Oncology.
Why it happens
Additive cardiotoxicity from anthracycline myocyte damage and HER2 signaling blockade.
What to do
Avoid concurrent use where possible and check LVEF at baseline and regularly. Stop or hold treatment if LVEF drops or heart failure develops.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Idarubicin and Trastuzumab, 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 Idarubicin
- Adenovirus types 4 and 7 live + Idarubicin Contraindicated
- Belatacept + Idarubicin Major
- Cyclophosphamide + Idarubicin Major
- Deferiprone + Idarubicin Major
- Dengue vaccine + Idarubicin Major
- Etrasimod + Idarubicin Major
Other interactions of Trastuzumab
Frequently asked questions
Can I take Idarubicin with Trastuzumab?
MediHelp rates the interaction as major. Idarubicin and Trastuzumab can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Trastuzumab-associated cardiomyopathy is more frequent and severe when combined with or given after anthracyclines. Idarubicin shares the cardiotoxic class effect, so the combination carries a significant risk of heart failure.
How serious is the interaction between Idarubicin and Trastuzumab?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use where possible and check LVEF at baseline and regularly. Stop or hold treatment if LVEF drops or heart failure develops.
What other medicines interact with Idarubicin?
MediHelp also lists interactions of Idarubicin with, for example, Adenovirus types 4 and 7 live, Belatacept, Cyclophosphamide. The full list is on the Idarubicin 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.
