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Drug interactions

Medroxyprogesterone + Nevirapine

Severity: Minor

Medroxyprogesterone 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 has little effect on depot medroxyprogesterone acetate exposure in studies, and contraceptive efficacy appears maintained. Oral formulations used for other indications might theoretically be less effective.

What this interaction means in plain words

Medroxyprogesterone 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.

Medroxyprogesterone belongs to Endocrine; Nevirapine belongs to Anti Virals.

Evidence level: Moderate

Why it happens

Nevirapine induces CYP3A4, which contributes to medroxyprogesterone metabolism, though the effect is small.

What to do

Depot injections can be used without dose change; monitor response when oral medroxyprogesterone is used for therapeutic indications.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Medroxyprogesterone with Nevirapine?

MediHelp rates the interaction as minor. Medroxyprogesterone 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 has little effect on depot medroxyprogesterone acetate exposure in studies, and contraceptive efficacy appears maintained. Oral formulations used for other indications might theoretically be less effective.

How serious is the interaction between Medroxyprogesterone 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: Depot injections can be used without dose change; monitor response when oral medroxyprogesterone is used for therapeutic indications.

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.

Full monographs, dosing and an interaction checker in the MediHelp app

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