Drug interactions
Mifepristone + Prednisone
Severity: Contraindicated
Mifepristone and Prednisone: contraindicated 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
Mifepristone is a glucocorticoid receptor antagonist and can blunt the effect of corticosteroids. In patients on long-term corticosteroids this may precipitate adrenal insufficiency or loss of disease control, and labeling for the abortion indication lists chronic corticosteroid therapy as a contraindication.
What this interaction means in plain words
Mifepristone and Prednisone are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Mifepristone belongs to Endocrine; Prednisone belongs to Endocrine.
Why it happens
Mifepristone antagonizes glucocorticoid receptors, opposing the effect of prednisone.
What to do
Do not use mifepristone in patients on long-term corticosteroid therapy. If a patient needs both, an alternative strategy should be selected by a specialist, since usual steroid doses may be ineffective.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
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Other interactions of Prednisone
- Bcg vaccine live + Prednisone Contraindicated
- Measles vaccine + Prednisone Contraindicated
- Prednisone + Radium-223 dichloride Contraindicated
- Prednisone + Smallpox vaccine live Contraindicated
- Adenovirus types 4 and 7 live + Prednisone Major
- Aldesleukin + Prednisone Major
Other interactions of Mifepristone
- Apixaban + Mifepristone Contraindicated
- Argatroban + Mifepristone Contraindicated
- Cisapride + Mifepristone Contraindicated
- Cortisone + Mifepristone Contraindicated
- Cyclosporin + Mifepristone Contraindicated
- Dabigatran etexilate + Mifepristone Contraindicated
Frequently asked questions
Can I take Mifepristone with Prednisone?
MediHelp rates the interaction as contraindicated. Mifepristone and Prednisone are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Mifepristone is a glucocorticoid receptor antagonist and can blunt the effect of corticosteroids. In patients on long-term corticosteroids this may precipitate adrenal insufficiency or loss of disease control, and labeling for the abortion indication lists chronic corticosteroid therapy as a contraindication.
How serious is the interaction between Mifepristone and Prednisone?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not use mifepristone in patients on long-term corticosteroid therapy. If a patient needs both, an alternative strategy should be selected by a specialist, since usual steroid doses may be ineffective.
What other medicines interact with Prednisone?
MediHelp also lists interactions of Prednisone with, for example, Bcg vaccine live, Measles vaccine, Radium-223 dichloride. The full list is on the Prednisone page.
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