Drug interactions
Metformin-pioglitazone + Metolazone
Severity: Moderate
Metformin-pioglitazone and Metolazone: 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
Metolazone is a thiazide-like diuretic that can worsen glucose tolerance and cause electrolyte disturbances. It may reduce the effectiveness of metformin and pioglitazone.
What this interaction means in plain words
Metformin-pioglitazone and Metolazone 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.
Metformin-pioglitazone belongs to Endocrine; Metolazone belongs to Cardiovascular.
Why it happens
Diuretic-induced hypokalemia and reduced insulin sensitivity raise blood glucose.
What to do
Monitor blood glucose and electrolytes, and adjust antidiabetic doses if control deteriorates.
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
Other interactions of Metolazone
Frequently asked questions
Can I take Metformin-pioglitazone with Metolazone?
MediHelp rates the interaction as moderate. Metformin-pioglitazone and Metolazone 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. Metolazone is a thiazide-like diuretic that can worsen glucose tolerance and cause electrolyte disturbances. It may reduce the effectiveness of metformin and pioglitazone.
How serious is the interaction between Metformin-pioglitazone and Metolazone?
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 electrolytes, and adjust antidiabetic doses if control deteriorates.
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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