Drug interactions
Captopril-hydrochlorothiazide + Norepinephrine
Severity: Minor
Captopril-hydrochlorothiazide and Norepinephrine: 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
Norepinephrine has minor effects on potassium, and hydrochlorothiazide can cause hypokalemia, so some additive lowering is possible. Thiazide-induced hypovolemia may also modify the pressor response. Captopril may blunt potassium loss.
What this interaction means in plain words
Captopril-hydrochlorothiazide and Norepinephrine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Adrenergic beta-2 stimulation shifts potassium into cells, adding to thiazide-induced renal potassium loss.
What to do
Monitor serum potassium in patients receiving norepinephrine infusion and replace as needed; titrate the infusion to blood pressure response.
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 Captopril-hydrochlorothiazide
- Aliskiren + Captopril-hydrochlorothiazide Contraindicated
- Captopril-hydrochlorothiazide + Dofetilide Contraindicated
- Captopril-hydrochlorothiazide + Sacubitril / valsartan Contraindicated
- Aceclofenac + Captopril-hydrochlorothiazide Major
- Aldesleukin + Captopril-hydrochlorothiazide Major
- Amifostine + Captopril-hydrochlorothiazide Major
Frequently asked questions
Can I take Captopril-hydrochlorothiazide with Norepinephrine?
MediHelp rates the interaction as minor. Captopril-hydrochlorothiazide and Norepinephrine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Norepinephrine has minor effects on potassium, and hydrochlorothiazide can cause hypokalemia, so some additive lowering is possible. Thiazide-induced hypovolemia may also modify the pressor response. Captopril may blunt potassium loss.
How serious is the interaction between Captopril-hydrochlorothiazide and Norepinephrine?
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 serum potassium in patients receiving norepinephrine infusion and replace as needed; titrate the infusion to blood pressure response.
What other medicines interact with Captopril-hydrochlorothiazide?
MediHelp also lists interactions of Captopril-hydrochlorothiazide with, for example, Aliskiren, Dofetilide, Sacubitril / valsartan. The full list is on the Captopril-hydrochlorothiazide page.
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