Drug interactions
Mexiletine + Talquetamab
Severity: Moderate
Mexiletine and Talquetamab: 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
Cytokine release syndrome caused by talquetamab can temporarily suppress CYP enzyme activity and raise mexiletine exposure. This may cause mexiletine toxicity such as tremor, dizziness, nausea or arrhythmia, particularly during step-up dosing and the following days.
What this interaction means in plain words
Mexiletine and Talquetamab 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.
Mexiletine belongs to Cardiovascular; Talquetamab belongs to Oncology.
Why it happens
Cytokine-mediated downregulation of CYP1A2 and CYP2D6 reduces mexiletine metabolism.
What to do
Monitor for mexiletine adverse effects and ECG changes from the start of step-up dosing until about 14 days after the first treatment dose and during any CRS. Reduce the mexiletine dose if toxicity appears.
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 Mexiletine
- Fezolinetant + Mexiletine Contraindicated
- Mexiletine + Pimozide Contraindicated
- Alosetron + Mexiletine Major
- Amiodarone + Mexiletine Major
- Clozapine + Mexiletine Major
- Cobicistat + Mexiletine Major
Other interactions of Talquetamab
- Clozapine + Talquetamab Major
- Pimozide + Talquetamab Major
- Bendamustine + Talquetamab Moderate
- Carbamazepine + Talquetamab Moderate
- Clomipramine + Talquetamab Moderate
- Colchicine + Talquetamab Moderate
Frequently asked questions
Can I take Mexiletine with Talquetamab?
MediHelp rates the interaction as moderate. Mexiletine and Talquetamab 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. Cytokine release syndrome caused by talquetamab can temporarily suppress CYP enzyme activity and raise mexiletine exposure. This may cause mexiletine toxicity such as tremor, dizziness, nausea or arrhythmia, particularly during step-up dosing and the following days.
How serious is the interaction between Mexiletine and Talquetamab?
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 for mexiletine adverse effects and ECG changes from the start of step-up dosing until about 14 days after the first treatment dose and during any CRS. Reduce the mexiletine dose if toxicity appears.
What other medicines interact with Mexiletine?
MediHelp also lists interactions of Mexiletine with, for example, Fezolinetant, Pimozide, Alosetron. The full list is on the Mexiletine page.
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