Drug interactions
Glimepiride + Rifapentine
Severity: Moderate
Glimepiride 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 enzyme inducer and may lower glimepiride exposure, weakening glucose control. The effect is similar to but generally somewhat weaker than that of rifampin.
What this interaction means in plain words
Glimepiride 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 belongs to Endocrine; Rifapentine belongs to Anti Bacterial.
Why it happens
Induction of CYP2C9 by rifapentine increases glimepiride metabolism.
What to do
Monitor blood glucose during and after rifapentine therapy and titrate the glimepiride dose accordingly.
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
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 with Rifapentine?
MediHelp rates the interaction as moderate. Glimepiride 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 enzyme inducer and may lower glimepiride exposure, weakening glucose control. The effect is similar to but generally somewhat weaker than that of rifampin.
How serious is the interaction between Glimepiride 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 during and after rifapentine therapy and titrate the glimepiride dose accordingly.
What other medicines interact with Glimepiride?
MediHelp also lists interactions of Glimepiride with, for example, Fluconazole, Insulin degludec-liraglutide, Insulin glargine-lixisenatide. The full list is on the Glimepiride page.
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