Drug interactions
Conjugated estrogens vaginal + Nevirapine
Severity: Minor
Conjugated estrogens vaginal 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
Vaginal conjugated estrogens act mainly locally with low systemic absorption, so any reduction by nevirapine induction is unlikely to matter clinically.
What this interaction means in plain words
Conjugated estrogens vaginal 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.
Why it happens
Nevirapine induces CYP3A4, which could modestly increase estrogen clearance.
What to do
No adjustment is needed. Reassess if local symptoms fail to respond.
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 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 Conjugated estrogens vaginal with Nevirapine?
MediHelp rates the interaction as minor. Conjugated estrogens vaginal 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. Vaginal conjugated estrogens act mainly locally with low systemic absorption, so any reduction by nevirapine induction is unlikely to matter clinically.
How serious is the interaction between Conjugated estrogens vaginal 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 adjustment is needed. Reassess if local symptoms fail to respond.
What other medicines interact with Nevirapine?
MediHelp also lists interactions of Nevirapine with, for example, Elbasvir / grazoprevir, Ranolazine, St john's wort. The full list is on the Nevirapine page.
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