Drug interactions
Finasteride + Miconazole vaginal
Severity: Minor
Finasteride and Miconazole vaginal: 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
Miconazole is a CYP3A4 inhibitor, but vaginal use gives low systemic exposure, so any effect on finasteride is expected to be negligible.
What this interaction means in plain words
Finasteride and Miconazole vaginal have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Theoretical CYP3A4 inhibition by miconazole with minimal systemic absorption.
What to do
No action is needed.
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 Finasteride
- Finasteride + Levoketoconazole Moderate
- Finasteride + Nefazodone Moderate
- Finasteride + Rifampin Moderate
- Finasteride + St john's wort Moderate
- Amobarbital + Finasteride Minor
- Aprepitant + Finasteride Minor
Frequently asked questions
Can I take Finasteride with Miconazole vaginal?
MediHelp rates the interaction as minor. Finasteride and Miconazole vaginal have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Miconazole is a CYP3A4 inhibitor, but vaginal use gives low systemic exposure, so any effect on finasteride is expected to be negligible.
How serious is the interaction between Finasteride and Miconazole vaginal?
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 action is needed.
What other medicines interact with Finasteride?
MediHelp also lists interactions of Finasteride with, for example, Levoketoconazole, Nefazodone, Rifampin. The full list is on the Finasteride page.
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