Drug interactions
Olanzapine + Pioglitazone
Severity: Moderate
Olanzapine and Pioglitazone: 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
Olanzapine can cause weight gain, insulin resistance and hyperglycemia that may offset the glucose-lowering effect of pioglitazone. Both drugs can cause weight gain, which may further complicate metabolic control.
What this interaction means in plain words
Olanzapine and Pioglitazone 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.
Olanzapine belongs to Central Nervous System; Pioglitazone belongs to Endocrine.
Why it happens
Olanzapine-induced insulin resistance opposes the insulin-sensitizing action of pioglitazone.
What to do
Monitor glucose, HbA1c and weight regularly and adjust antidiabetic therapy as needed. Reassess if olanzapine is started, changed or stopped.
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 Olanzapine
Other interactions of Pioglitazone
Frequently asked questions
Can I take Olanzapine with Pioglitazone?
MediHelp rates the interaction as moderate. Olanzapine and Pioglitazone 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. Olanzapine can cause weight gain, insulin resistance and hyperglycemia that may offset the glucose-lowering effect of pioglitazone. Both drugs can cause weight gain, which may further complicate metabolic control.
How serious is the interaction between Olanzapine and Pioglitazone?
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 glucose, HbA1c and weight regularly and adjust antidiabetic therapy as needed. Reassess if olanzapine is started, changed or stopped.
What other medicines interact with Olanzapine?
MediHelp also lists interactions of Olanzapine with, for example, Amisulpride, Amoxapine, Apomorphine. The full list is on the Olanzapine page.
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