Drug interactions
Dexamethasone + Metformin-repaglinide
Severity: Moderate
Dexamethasone and Metformin-repaglinide: 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 hyperglycemia, which can substantially reduce the effect of metformin and repaglinide. It is also a CYP3A4 inducer that may lower repaglinide concentrations.
What this interaction means in plain words
Dexamethasone and Metformin-repaglinide 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; Metformin-repaglinide belongs to Endocrine.
Why it happens
Glucocorticoid-induced insulin resistance and hepatic gluconeogenesis, with CYP3A4 induction lowering repaglinide exposure.
What to do
Monitor blood glucose frequently during dexamethasone therapy and increase antidiabetic doses or add insulin as needed, reducing them again when the steroid is tapered.
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 Metformin-repaglinide
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 Dexamethasone with Metformin-repaglinide?
MediHelp rates the interaction as moderate. Dexamethasone and Metformin-repaglinide 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 hyperglycemia, which can substantially reduce the effect of metformin and repaglinide. It is also a CYP3A4 inducer that may lower repaglinide concentrations.
How serious is the interaction between Dexamethasone and Metformin-repaglinide?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood glucose frequently during dexamethasone therapy and increase antidiabetic doses or add insulin as needed, reducing them again when the steroid is tapered.
What other medicines interact with Metformin-repaglinide?
MediHelp also lists interactions of Metformin-repaglinide with, for example, Gemfibrozil, Apalutamide, Clarithromycin. The full list is on the Metformin-repaglinide page.
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