Drug interactions
Finasteride + Nevirapine
Severity: Minor
Finasteride and Nevirapine: 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
Nevirapine induces CYP3A4 and may lower finasteride concentrations. Loss of finasteride effect is possible but unlikely to be significant in most patients.
What this interaction means in plain words
Finasteride and Nevirapine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Finasteride belongs to Genitourinary; Nevirapine belongs to Anti Virals.
Why it happens
Nevirapine induces CYP3A4, increasing finasteride metabolism.
What to do
No empirical dose change is required. Reassess finasteride response if symptoms fail to improve.
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
Other interactions of Nevirapine
- Elbasvir / grazoprevir + Nevirapine Contraindicated
- Nevirapine + Ranolazine Contraindicated
- Nevirapine + St john's wort Contraindicated
- Abemaciclib + Nevirapine Major
- Acalabrutinib + Nevirapine Major
- Amobarbital + Nevirapine Major
Frequently asked questions
Can I take Finasteride with Nevirapine?
MediHelp rates the interaction as minor. Finasteride and Nevirapine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Nevirapine induces CYP3A4 and may lower finasteride concentrations. Loss of finasteride effect is possible but unlikely to be significant in most patients.
How serious is the interaction between Finasteride and Nevirapine?
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 required. Reassess finasteride response if symptoms fail to improve.
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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