Drug interactions
Dexamethasone + Voxelotor
Severity: Moderate
Dexamethasone and Voxelotor: 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
Voxelotor can raise concentrations of sensitive CYP3A4 substrates such as dexamethasone, increasing steroid exposure. This may enhance corticosteroid adverse effects, mainly with prolonged use.
What this interaction means in plain words
Dexamethasone and Voxelotor 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.
Dexamethasone belongs to Endocrine; Voxelotor belongs to Miscellaneous.
Why it happens
Voxelotor inhibits CYP3A4, reducing dexamethasone clearance.
What to do
Monitor for corticosteroid effects such as hyperglycemia, fluid retention and mood changes, and reduce the dexamethasone dose if they occur.
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 Dexamethasone
- Bcg vaccine live + Dexamethasone Contraindicated
- Dexamethasone + Mifepristone Contraindicated
- Dexamethasone + Rilpivirine Contraindicated
- Dexamethasone + Smallpox vaccine live Contraindicated
- Dexamethasone + Varicella virus vaccine live Contraindicated
- Dexamethasone + Yellow fever vaccine Contraindicated
Other interactions of Voxelotor
- Amobarbital + Voxelotor Major
- Apalutamide + Voxelotor Major
- Carbamazepine + Voxelotor Major
- Cyclosporin + Voxelotor Major
- Efavirenz + Voxelotor Major
- Enzalutamide + Voxelotor Major
Frequently asked questions
Can I take Dexamethasone with Voxelotor?
MediHelp rates the interaction as moderate. Dexamethasone and Voxelotor 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. Voxelotor can raise concentrations of sensitive CYP3A4 substrates such as dexamethasone, increasing steroid exposure. This may enhance corticosteroid adverse effects, mainly with prolonged use.
How serious is the interaction between Dexamethasone and Voxelotor?
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 corticosteroid effects such as hyperglycemia, fluid retention and mood changes, and reduce the dexamethasone dose if they occur.
What other medicines interact with Dexamethasone?
MediHelp also lists interactions of Dexamethasone with, for example, Bcg vaccine live, Mifepristone, Rilpivirine. The full list is on the Dexamethasone page.
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