Drug interactions
Ethinylestradiol + Pioglitazone
Severity: Minor
Ethinylestradiol and Pioglitazone: 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 ethinylestradiol exposure in pharmacokinetic studies. The clinical impact on contraceptive efficacy is uncertain and probably small.
What this interaction means in plain words
Ethinylestradiol and Pioglitazone 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
Mechanism is not firmly established; possible weak CYP3A4 induction.
What to do
Counsel patients to report breakthrough bleeding. Consider additional contraception if reliability is critical.
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 Pioglitazone
Frequently asked questions
Can I take Ethinylestradiol with Pioglitazone?
MediHelp rates the interaction as minor. Ethinylestradiol and Pioglitazone 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 ethinylestradiol exposure in pharmacokinetic studies. The clinical impact on contraceptive efficacy is uncertain and probably small.
How serious is the interaction between Ethinylestradiol and Pioglitazone?
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. Consider additional contraception if reliability is critical.
What other medicines interact with Pioglitazone?
MediHelp also lists interactions of Pioglitazone with, for example, Insulin aspart-insulin aspart protamine, Insulin aspart, Insulin degludec-insulin aspart. The full list is on the Pioglitazone page.
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