Drug interactions
Dapsone + Dexamethasone
Severity: Minor
Dapsone and Dexamethasone: minor 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
Dexamethasone is a mild to moderate CYP3A4 inducer and may lower dapsone exposure. Clinically important loss of effect is uncommon.
What this interaction means in plain words
Dapsone and Dexamethasone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Dapsone belongs to Anti Bacterial; Dexamethasone belongs to Endocrine.
Why it happens
CYP3A4 induction by dexamethasone increases dapsone metabolism.
What to do
Monitor clinical response to dapsone, for example in Pneumocystis prophylaxis, and adjust if efficacy seems reduced.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Dapsone
- Bcg vaccine live + Dapsone Major
- Dapsone + Primaquine Major
- Apalutamide + Dapsone Moderate
- Belzutifan + Dapsone Moderate
- Bosentan + Dapsone Moderate
- Bupivacaine implant + Dapsone Moderate
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
Frequently asked questions
Can I take Dapsone with Dexamethasone?
MediHelp rates the interaction as minor. Dapsone and Dexamethasone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Dexamethasone is a mild to moderate CYP3A4 inducer and may lower dapsone exposure. Clinically important loss of effect is uncommon.
How serious is the interaction between Dapsone and Dexamethasone?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor clinical response to dapsone, for example in Pneumocystis prophylaxis, and adjust if efficacy seems reduced.
What other medicines interact with Dapsone?
MediHelp also lists interactions of Dapsone with, for example, Bcg vaccine live, Primaquine, Apalutamide. The full list is on the Dapsone page.
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