Drug interactions
Insulin aspart + Metolazone
Severity: Moderate
Insulin aspart 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 may increase blood glucose and thereby lessen the effect of insulin aspart. Insulin requirements can rise, especially early in diuretic therapy or with dose increases.
What this interaction means in plain words
Insulin aspart 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.
Insulin aspart belongs to Endocrine; Metolazone belongs to Cardiovascular.
Why it happens
Thiazide-like diuretics reduce insulin secretion and tissue insulin sensitivity, partly via hypokalemia, opposing insulin action.
What to do
Monitor glucose more frequently when metolazone is started or changed, and titrate insulin aspart accordingly. Correct hypokalemia.
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 Metolazone
Other interactions of Insulin aspart
Frequently asked questions
Can I take Insulin aspart with Metolazone?
MediHelp rates the interaction as moderate. Insulin aspart 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 may increase blood glucose and thereby lessen the effect of insulin aspart. Insulin requirements can rise, especially early in diuretic therapy or with dose increases.
How serious is the interaction between Insulin aspart 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 glucose more frequently when metolazone is started or changed, and titrate insulin aspart accordingly. Correct hypokalemia.
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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