Drug interactions
Hydrochlorothiazide + Ketorolac intranasal
Severity: Moderate
Hydrochlorothiazide and Ketorolac intranasal: 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 effects of thiazides and, in volume-depleted patients, raise the risk of acute kidney injury. Systemic exposure from the intranasal route is lower than oral or injectable use but still meaningful.
What this interaction means in plain words
Hydrochlorothiazide and Ketorolac intranasal 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
NSAID inhibition of renal prostaglandin synthesis causes sodium and water retention and reduces renal perfusion, opposing thiazide action.
What to do
Monitor blood pressure, fluid status and renal function, keep ketorolac courses short, and ensure adequate hydration.
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 Hydrochlorothiazide
Frequently asked questions
Can I take Hydrochlorothiazide with Ketorolac intranasal?
MediHelp rates the interaction as moderate. Hydrochlorothiazide and Ketorolac intranasal 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 effects of thiazides and, in volume-depleted patients, raise the risk of acute kidney injury. Systemic exposure from the intranasal route is lower than oral or injectable use but still meaningful.
How serious is the interaction between Hydrochlorothiazide and Ketorolac intranasal?
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, fluid status and renal function, keep ketorolac courses short, and ensure adequate hydration.
What other medicines interact with Hydrochlorothiazide?
MediHelp also lists interactions of Hydrochlorothiazide with, for example, Dofetilide, Amifostine, Amiodarone. The full list is on the Hydrochlorothiazide page.
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