Drug interactions
Corticorelin + Dexamethasone
Severity: Moderate
Corticorelin and Dexamethasone: moderate 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
Dexamethasone suppresses the pituitary-adrenal axis, so the ACTH and cortisol response to corticorelin is blunted. This can produce a misleading diagnostic result when differentiating causes of Cushing syndrome.
What this interaction means in plain words
Corticorelin and Dexamethasone can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Glucocorticoid negative feedback at the pituitary suppresses ACTH release in response to corticorelin.
What to do
Avoid interpreting corticorelin stimulation tests in patients recently given dexamethasone; follow the test protocol regarding steroid withdrawal before testing.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Dexamethasone
- Bcg vaccine live + Dexamethasone Contraindicated
- Dexamethasone + Mifepristone Contraindicated
- Dexamethasone + Rilpivirine Contraindicated
- Dexamethasone + Smallpox vaccine live Contraindicated
- Dexamethasone + Varicella virus vaccine live Contraindicated
- Dexamethasone + Yellow fever vaccine Contraindicated
Frequently asked questions
Can I take Corticorelin with Dexamethasone?
MediHelp rates the interaction as moderate. Corticorelin and Dexamethasone can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Dexamethasone suppresses the pituitary-adrenal axis, so the ACTH and cortisol response to corticorelin is blunted. This can produce a misleading diagnostic result when differentiating causes of Cushing syndrome.
How serious is the interaction between Corticorelin and Dexamethasone?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid interpreting corticorelin stimulation tests in patients recently given dexamethasone; follow the test protocol regarding steroid withdrawal before testing.
What other medicines interact with Dexamethasone?
MediHelp also lists interactions of Dexamethasone with, for example, Bcg vaccine live, Mifepristone, Rilpivirine. The full list is on the Dexamethasone page.
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