Drug interactions
Insulin inhaled + Metformin-pioglitazone
Severity: Moderate
Insulin inhaled and Metformin-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
Combining insulin with metformin and pioglitazone lowers blood glucose more than either alone, which raises the risk of hypoglycemia. Insulin may also add to the fluid retention caused by pioglitazone, which matters in patients with heart failure risk.
What this interaction means in plain words
Insulin inhaled and Metformin-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.
Why it happens
Additive glucose-lowering pharmacodynamic effects, with insulin and thiazolidinedione both contributing to fluid retention.
What to do
Monitor blood glucose and reduce the insulin dose if hypoglycemia occurs when starting the combination. Watch for edema, rapid weight gain and heart failure symptoms.
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 Metformin-pioglitazone
Frequently asked questions
Can I take Insulin inhaled with Metformin-pioglitazone?
MediHelp rates the interaction as moderate. Insulin inhaled and Metformin-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. Combining insulin with metformin and pioglitazone lowers blood glucose more than either alone, which raises the risk of hypoglycemia. Insulin may also add to the fluid retention caused by pioglitazone, which matters in patients with heart failure risk.
How serious is the interaction between Insulin inhaled and Metformin-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 blood glucose and reduce the insulin dose if hypoglycemia occurs when starting the combination. Watch for edema, rapid weight gain and heart failure symptoms.
What other medicines interact with Metformin-pioglitazone?
MediHelp also lists interactions of Metformin-pioglitazone with, for example, Contrast media, Diatrizoate meglumine / diatrizoate, Diatrizoate. The full list is on the Metformin-pioglitazone page.
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