Drug interactions
Ketorolac intranasal + Metolazone
Severity: Moderate
Ketorolac intranasal 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
NSAIDs such as ketorolac can blunt the diuretic and antihypertensive effect of thiazide-type diuretics through renal prostaglandin inhibition and sodium retention. In patients with volume depletion, which is common with metolazone, NSAIDs also raise the risk of acute kidney injury.
What this interaction means in plain words
Ketorolac intranasal 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.
Why it happens
Inhibition of renal prostaglandin synthesis causes sodium and water retention and reduced renal perfusion, opposing diuretic action.
What to do
Monitor blood pressure, edema, weight and renal function, and use the lowest effective ketorolac dose for the shortest time. Ensure adequate hydration and consider an alternative analgesic in patients with heart failure or renal impairment.
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
Frequently asked questions
Can I take Ketorolac intranasal with Metolazone?
MediHelp rates the interaction as moderate. Ketorolac intranasal 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. NSAIDs such as ketorolac can blunt the diuretic and antihypertensive effect of thiazide-type diuretics through renal prostaglandin inhibition and sodium retention. In patients with volume depletion, which is common with metolazone, NSAIDs also raise the risk of acute kidney injury.
How serious is the interaction between Ketorolac intranasal 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 pressure, edema, weight and renal function, and use the lowest effective ketorolac dose for the shortest time. Ensure adequate hydration and consider an alternative analgesic in patients with heart failure or renal impairment.
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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