Drug interactions
Glimepiride-pioglitazone + Mestranol
Severity: Minor
Glimepiride-pioglitazone and Mestranol: minor 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
Pioglitazone has been reported to modestly lower exposure to some oral contraceptive hormones, which could in theory reduce contraceptive reliability. The effect is not well characterized and the clinical importance is uncertain.
What this interaction means in plain words
Glimepiride-pioglitazone and Mestranol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Possible weak induction of CYP3A4-mediated estrogen metabolism by pioglitazone; mechanism is not firmly established.
What to do
Counsel patients to report breakthrough bleeding and consider a reliable additional contraceptive method if contraceptive failure is a concern.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Glimepiride-pioglitazone
Frequently asked questions
Can I take Glimepiride-pioglitazone with Mestranol?
MediHelp rates the interaction as minor. Glimepiride-pioglitazone and Mestranol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Pioglitazone has been reported to modestly lower exposure to some oral contraceptive hormones, which could in theory reduce contraceptive reliability. The effect is not well characterized and the clinical importance is uncertain.
How serious is the interaction between Glimepiride-pioglitazone and Mestranol?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Counsel patients to report breakthrough bleeding and consider a reliable additional contraceptive method if contraceptive failure is a concern.
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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