Drug interactions
Insulin glargine + Pioglitazone
Severity: Major
Insulin glargine and Pioglitazone: major 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 with insulin increases the risk of fluid retention, edema and heart failure, and adds to glucose lowering, raising hypoglycemia risk.
What this interaction means in plain words
Insulin glargine and Pioglitazone can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Insulin glargine belongs to Endocrine; Pioglitazone belongs to Endocrine.
Why it happens
PPAR-gamma agonism promotes renal sodium and fluid retention, enhanced by insulin, and improves insulin sensitivity additively.
What to do
Monitor for edema, rapid weight gain and heart failure signs, and avoid in patients with heart failure; reduce the insulin dose if hypoglycemia occurs.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Insulin glargine
Other interactions of Pioglitazone
Frequently asked questions
Can I take Insulin glargine with Pioglitazone?
MediHelp rates the interaction as major. Insulin glargine and Pioglitazone can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Pioglitazone with insulin increases the risk of fluid retention, edema and heart failure, and adds to glucose lowering, raising hypoglycemia risk.
How serious is the interaction between Insulin glargine and Pioglitazone?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for edema, rapid weight gain and heart failure signs, and avoid in patients with heart failure; reduce the insulin dose if hypoglycemia occurs.
What other medicines interact with Insulin glargine?
MediHelp also lists interactions of Insulin glargine with, for example, Alogliptin-pioglitazone, Ethanol, Glimepiride-pioglitazone. The full list is on the Insulin glargine page.
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