Drug interactions
Glimepiride + Metolazone
Severity: Minor
Glimepiride and Metolazone: 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
Metolazone may raise blood glucose and weaken the effect of glimepiride, so glycaemic control can worsen. Diuretic-induced hyponatraemia and potassium loss may add to the problem.
What this interaction means in plain words
Glimepiride and Metolazone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Glimepiride belongs to Endocrine; Metolazone belongs to Cardiovascular.
Why it happens
Pharmacodynamic antagonism: thiazide-like diuretics impair insulin secretion and sensitivity, partly through hypokalaemia.
What to do
Monitor blood glucose and potassium after starting or adjusting metolazone and increase the glimepiride dose if control worsens.
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 Metolazone
Other interactions of Glimepiride
Frequently asked questions
Can I take Glimepiride with Metolazone?
MediHelp rates the interaction as minor. Glimepiride and Metolazone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Metolazone may raise blood glucose and weaken the effect of glimepiride, so glycaemic control can worsen. Diuretic-induced hyponatraemia and potassium loss may add to the problem.
How serious is the interaction between Glimepiride and Metolazone?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood glucose and potassium after starting or adjusting metolazone and increase the glimepiride dose if control worsens.
What other medicines interact with Metolazone?
MediHelp also lists interactions of Metolazone with, for example, Amifostine, Amlodipine-hydrochlorothiazide-valsartan, Amlodipine-olmesartan-hydrochlorothiazide. The full list is on the Metolazone page.
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