Drug interactions
Asciminib + Clarithromycin
Severity: Major
Asciminib and Clarithromycin: 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
Both drugs can prolong the QT interval, so combining them may increase the risk of torsades de pointes. Clarithromycin also inhibits CYP3A4, which may modestly raise asciminib exposure.
What this interaction means in plain words
Asciminib and Clarithromycin 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.
Asciminib belongs to Oncology; Clarithromycin belongs to Anti Bacterial.
Why it happens
Additive QT prolongation, with possible CYP3A4 inhibition by clarithromycin.
What to do
Avoid with the higher asciminib dose of 200 mg twice daily. At lower doses, obtain a baseline ECG, monitor ECG and electrolytes, and correct potassium and magnesium.
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?
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Other interactions of Asciminib
- Asciminib + Dihydroergotamine Major
- Asciminib + Ergotamine Major
- Asciminib + Haloperidol Major
- Asciminib + Methadone Major
- Asciminib + Moxifloxacin Major
- Asciminib + Atorvastatin Moderate
Other interactions of Clarithromycin
- Astemizole + Clarithromycin Contraindicated
- Avanafil + Clarithromycin Contraindicated
- Cisapride + Clarithromycin Contraindicated
- Clarithromycin + Colchicine Contraindicated
- Clarithromycin + Conivaptan Contraindicated
- Clarithromycin + Dihydroergotamine Contraindicated
Frequently asked questions
Can I take Asciminib with Clarithromycin?
MediHelp rates the interaction as major. Asciminib and Clarithromycin 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. Both drugs can prolong the QT interval, so combining them may increase the risk of torsades de pointes. Clarithromycin also inhibits CYP3A4, which may modestly raise asciminib exposure.
How serious is the interaction between Asciminib and Clarithromycin?
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 with the higher asciminib dose of 200 mg twice daily. At lower doses, obtain a baseline ECG, monitor ECG and electrolytes, and correct potassium and magnesium.
What other medicines interact with Asciminib?
MediHelp also lists interactions of Asciminib with, for example, Dihydroergotamine, Ergotamine, Haloperidol. The full list is on the Asciminib page.
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