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Drug interactions

Captopril-hydrochlorothiazide + Esmolol

Severity: Minor

Captopril-hydrochlorothiazide and Esmolol: 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

Esmolol may modestly raise serum potassium by blocking beta-2 mediated cellular uptake, while thiazides lower it, so the net effect is unpredictable and usually small. The more relevant effect is additive hypotension and bradycardia.

What this interaction means in plain words

Captopril-hydrochlorothiazide and Esmolol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Captopril-hydrochlorothiazide belongs to Cardiovascular; Esmolol belongs to Cardiovascular.

Evidence level: Low

Why it happens

Beta-blockade has opposing effects on potassium distribution relative to thiazide kaliuresis, with additive hypotensive effects.

What to do

Monitor blood pressure, heart rate and serum potassium during esmolol infusion.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Captopril-hydrochlorothiazide with Esmolol?

MediHelp rates the interaction as minor. Captopril-hydrochlorothiazide and Esmolol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Esmolol may modestly raise serum potassium by blocking beta-2 mediated cellular uptake, while thiazides lower it, so the net effect is unpredictable and usually small. The more relevant effect is additive hypotension and bradycardia.

How serious is the interaction between Captopril-hydrochlorothiazide and Esmolol?

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 blood pressure, heart rate and serum potassium during esmolol infusion.

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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