Drug interactions
Belzutifan + Ixazomib
Severity: Moderate
Belzutifan and Ixazomib: 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
Belzutifan is a CYP3A4 inducer and may lower ixazomib concentrations. Ixazomib labeling advises avoiding strong CYP3A inducers, and belzutifan is weaker, but reduced antimyeloma efficacy is possible.
What this interaction means in plain words
Belzutifan and Ixazomib 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.
Belzutifan belongs to Miscellaneous; Ixazomib belongs to Oncology.
Why it happens
Belzutifan induces CYP3A4, increasing the metabolism of ixazomib and lowering its exposure.
What to do
Avoid the combination if possible; if it is needed, monitor disease response closely. Do not empirically increase the ixazomib dose.
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 Ixazomib
- Apalutamide + Ixazomib Major
- Carbamazepine + Ixazomib Major
- Dabrafenib + Ixazomib Major
- Enzalutamide + Ixazomib Major
- Etrasimod + Ixazomib Major
- Fosphenytoin + Ixazomib Major
Other interactions of Belzutifan
Frequently asked questions
Can I take Belzutifan with Ixazomib?
MediHelp rates the interaction as moderate. Belzutifan and Ixazomib 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. Belzutifan is a CYP3A4 inducer and may lower ixazomib concentrations. Ixazomib labeling advises avoiding strong CYP3A inducers, and belzutifan is weaker, but reduced antimyeloma efficacy is possible.
How serious is the interaction between Belzutifan and Ixazomib?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination if possible; if it is needed, monitor disease response closely. Do not empirically increase the ixazomib dose.
What other medicines interact with Ixazomib?
MediHelp also lists interactions of Ixazomib with, for example, Apalutamide, Carbamazepine, Dabrafenib. The full list is on the Ixazomib page.
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