Drug interactions
Deflazacort + Nevirapine
Severity: Major
Deflazacort and Nevirapine: major interaction.
Last updated Sources: UK SmPC
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 can reduce exposure to deflazacort's active metabolite, which may lessen its therapeutic effect. Labeling advises avoiding moderate or strong CYP3A4 inducers.
What this interaction means in plain words
Deflazacort and Nevirapine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Deflazacort belongs to Miscellaneous; Nevirapine belongs to Anti Virals.
Why it happens
Nevirapine induces CYP3A4, accelerating the metabolism of deflazacort's active metabolite.
What to do
Avoid the combination and use an antiretroviral without inducing activity. If unavoidable, monitor clinical response closely.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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References
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
Other interactions of Deflazacort
- Adenovirus types 4 and 7 live + Deflazacort Contraindicated
- Bcg vaccine live + Deflazacort Contraindicated
- Deflazacort + Influenza virus vaccine quadrivalent intranasal Contraindicated
- Deflazacort + Measles mumps and rubella vaccine Contraindicated
- Deflazacort + Measles mumps and rubella vaccine live Contraindicated
- Deflazacort + Measles mumps rubella and varicella vaccine live Contraindicated
Frequently asked questions
Can I take Deflazacort with Nevirapine?
MediHelp rates the interaction as major. Deflazacort and Nevirapine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Nevirapine can reduce exposure to deflazacort's active metabolite, which may lessen its therapeutic effect. Labeling advises avoiding moderate or strong CYP3A4 inducers.
How serious is the interaction between Deflazacort and Nevirapine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination and use an antiretroviral without inducing activity. If unavoidable, monitor clinical response closely.
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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