Drug interactions
Glibenclamide + Metformin-sitagliptin
Severity: Moderate
Glibenclamide and Metformin-sitagliptin: 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
Adding a DPP-4 inhibitor to a sulfonylurea increases the risk of hypoglycemia, since the sulfonylurea drives insulin release regardless of glucose level. Glyburide has a long duration of action and active metabolites, which adds to the risk, especially in older adults or those with renal impairment.
What this interaction means in plain words
Glibenclamide and Metformin-sitagliptin 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.
Glibenclamide belongs to Endocrine; Metformin-sitagliptin belongs to Endocrine.
Why it happens
Additive glucose-lowering pharmacodynamic effects, with glucose-dependent incretin enhancement layered on sulfonylurea-driven insulin secretion.
What to do
Consider lowering the glyburide dose when starting sitagliptin-metformin and monitor blood glucose, particularly in elderly or renally impaired patients.
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-sitagliptin
Other interactions of Glibenclamide
- Bosentan + Glibenclamide Contraindicated
- Cholic acid + Glibenclamide Major
- Ciprofloxacin + Glibenclamide Major
- Clarithromycin + Glibenclamide Major
- Fluconazole + Glibenclamide Major
- Glibenclamide + Insulin degludec-liraglutide Major
Frequently asked questions
Can I take Glibenclamide with Metformin-sitagliptin?
MediHelp rates the interaction as moderate. Glibenclamide and Metformin-sitagliptin 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. Adding a DPP-4 inhibitor to a sulfonylurea increases the risk of hypoglycemia, since the sulfonylurea drives insulin release regardless of glucose level. Glyburide has a long duration of action and active metabolites, which adds to the risk, especially in older adults or those with renal impairment.
How serious is the interaction between Glibenclamide and Metformin-sitagliptin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Consider lowering the glyburide dose when starting sitagliptin-metformin and monitor blood glucose, particularly in elderly or renally impaired patients.
What other medicines interact with Metformin-sitagliptin?
MediHelp also lists interactions of Metformin-sitagliptin with, for example, Clozapine, Contrast media, Diatrizoate meglumine / diatrizoate. The full list is on the Metformin-sitagliptin page.
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