Drug interactions
Glimepiride-pioglitazone + Rifapentine
Severity: Moderate
Glimepiride-pioglitazone and Rifapentine: 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
Rifapentine is an inducer of CYP2C8 and CYP2C9 and may lower levels of glimepiride and pioglitazone. This can reduce glycemic control.
What this interaction means in plain words
Glimepiride-pioglitazone and Rifapentine 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.
Glimepiride-pioglitazone belongs to Endocrine; Rifapentine belongs to Anti Bacterial.
Why it happens
Rifapentine induces CYP2C8/2C9 enzymes, increasing clearance of the drugs.
What to do
Monitor blood glucose frequently and adjust doses during and after rifapentine therapy.
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
Other interactions of Rifapentine
- Ledipasvir-sofosbuvir + Rifapentine Contraindicated
- Lorlatinib + Rifapentine Contraindicated
- Lurasidone + Rifapentine Contraindicated
- Ranolazine + Rifapentine Contraindicated
- Rifapentine + Sofosbuvir-velpatasvir Contraindicated
- Rifapentine + Sofosbuvir-velpatasvir-voxilaprevir Contraindicated
Frequently asked questions
Can I take Glimepiride-pioglitazone with Rifapentine?
MediHelp rates the interaction as moderate. Glimepiride-pioglitazone and Rifapentine 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. Rifapentine is an inducer of CYP2C8 and CYP2C9 and may lower levels of glimepiride and pioglitazone. This can reduce glycemic control.
How serious is the interaction between Glimepiride-pioglitazone and Rifapentine?
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 and adjust doses during and after rifapentine therapy.
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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