Drug interactions
Hydrochlorothiazide + Norepinephrine
Severity: Moderate
Hydrochlorothiazide and Norepinephrine: 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
Norepinephrine given intravenously may reduce potassium through beta-2 effects, and combined with thiazide kaliuresis could worsen hypokalemia. Thiazides may also slightly reduce vascular responsiveness to pressors.
What this interaction means in plain words
Hydrochlorothiazide and Norepinephrine 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
Additive potassium lowering via renal loss and beta-adrenergic intracellular shift; thiazide may blunt pressor response.
What to do
Monitor serum potassium and blood pressure during norepinephrine infusion and replace potassium as needed.
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 Norepinephrine?
MediHelp rates the interaction as moderate. Hydrochlorothiazide and Norepinephrine 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. Norepinephrine given intravenously may reduce potassium through beta-2 effects, and combined with thiazide kaliuresis could worsen hypokalemia. Thiazides may also slightly reduce vascular responsiveness to pressors.
How serious is the interaction between Hydrochlorothiazide and Norepinephrine?
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 serum potassium and blood pressure during norepinephrine infusion and replace potassium as needed.
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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