Drug interactions
Dexamethasone + Insulin degludec
Severity: Moderate
Dexamethasone and Insulin degludec: 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 commonly causes marked hyperglycemia, which can substantially raise insulin requirements. Without dose adjustment, glycemic control can deteriorate, and insulin doses may need to be reduced again when the steroid is tapered.
What this interaction means in plain words
Dexamethasone and Insulin degludec 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 belongs to Endocrine; Insulin degludec belongs to Endocrine.
Why it happens
Pharmacodynamic antagonism, as glucocorticoids increase hepatic gluconeogenesis and peripheral insulin resistance.
What to do
Increase blood glucose monitoring during dexamethasone therapy and titrate insulin degludec (often with added prandial insulin) as needed. Reduce insulin doses as the steroid is tapered to avoid hypoglycemia.
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
Other interactions of Insulin degludec
Frequently asked questions
Can I take Dexamethasone with Insulin degludec?
MediHelp rates the interaction as moderate. Dexamethasone and Insulin degludec 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 commonly causes marked hyperglycemia, which can substantially raise insulin requirements. Without dose adjustment, glycemic control can deteriorate, and insulin doses may need to be reduced again when the steroid is tapered.
How serious is the interaction between Dexamethasone and Insulin degludec?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Increase blood glucose monitoring during dexamethasone therapy and titrate insulin degludec (often with added prandial insulin) as needed. Reduce insulin doses as the steroid is tapered to avoid hypoglycemia.
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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