Drug interactions
Dexamethasone + Dutasteride-tamsulosin
Severity: Minor
Dexamethasone and Dutasteride-tamsulosin: 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 weak to moderate inducer of CYP3A4 and may lower dutasteride and tamsulosin levels, especially with prolonged systemic courses. Reduced efficacy is theoretically possible but is rarely significant in practice.
What this interaction means in plain words
Dexamethasone and Dutasteride-tamsulosin 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 belongs to Endocrine; Dutasteride-tamsulosin belongs to Genitourinary.
Why it happens
Induction of CYP3A4 by dexamethasone increases clearance of dutasteride and tamsulosin.
What to do
No empirical dose change is needed; monitor lower urinary tract symptoms if long-term dexamethasone is used.
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 Dutasteride-tamsulosin
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 Dexamethasone with Dutasteride-tamsulosin?
MediHelp rates the interaction as minor. Dexamethasone and Dutasteride-tamsulosin 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 weak to moderate inducer of CYP3A4 and may lower dutasteride and tamsulosin levels, especially with prolonged systemic courses. Reduced efficacy is theoretically possible but is rarely significant in practice.
How serious is the interaction between Dexamethasone and Dutasteride-tamsulosin?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No empirical dose change is needed; monitor lower urinary tract symptoms if long-term dexamethasone is used.
What other medicines interact with Dutasteride-tamsulosin?
MediHelp also lists interactions of Dutasteride-tamsulosin with, for example, Alfuzosin, Amifostine, Atazanavir. The full list is on the Dutasteride-tamsulosin page.
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