Drug interactions
Glimepiride-pioglitazone + Parecoxib
Severity: Moderate
Glimepiride-pioglitazone and Parecoxib: 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
NSAIDs including COX-2 inhibitors may enhance the hypoglycemic effect of sulfonylureas. Parecoxib is metabolized to valdecoxib, which is a CYP2C9 substrate, so competition for metabolism may contribute. Glucose may fall further in some patients.
What this interaction means in plain words
Glimepiride-pioglitazone and Parecoxib 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
Possible CYP2C9 competition and protein-binding effects; mechanism not firmly established.
What to do
Monitor blood glucose when starting parecoxib and reduce glimepiride dose if hypoglycemia occurs.
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 Glimepiride-pioglitazone
Frequently asked questions
Can I take Glimepiride-pioglitazone with Parecoxib?
MediHelp rates the interaction as moderate. Glimepiride-pioglitazone and Parecoxib 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. NSAIDs including COX-2 inhibitors may enhance the hypoglycemic effect of sulfonylureas. Parecoxib is metabolized to valdecoxib, which is a CYP2C9 substrate, so competition for metabolism may contribute. Glucose may fall further in some patients.
How serious is the interaction between Glimepiride-pioglitazone and Parecoxib?
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 when starting parecoxib and reduce glimepiride dose if hypoglycemia occurs.
What other medicines interact with Glimepiride-pioglitazone?
MediHelp also lists interactions of Glimepiride-pioglitazone with, for example, Fluconazole, Gemfibrozil, Insulin aspart. The full list is on the Glimepiride-pioglitazone page.
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