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Drug interactions

Formoterol + Sacubitril-valsartan

Severity: Minor

Formoterol and Sacubitril-valsartan: 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

Formoterol can lower serum potassium via beta-2 stimulation, opposing the potassium-retaining effect of the angiotensin receptor blocker. Net potassium effect is generally small at inhaled doses, though cardiovascular effects may matter in susceptible patients.

What this interaction means in plain words

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

Formoterol belongs to Respiratory; Sacubitril-valsartan belongs to Cardiovascular.

Evidence level: Low

Why it happens

Beta-2-mediated intracellular potassium shift opposing angiotensin receptor blocker-related potassium retention.

What to do

No routine action is needed. Monitor serum potassium in patients on high doses or with other hypokalemic drugs or hyperkalemia risk.

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 Formoterol with Sacubitril-valsartan?

MediHelp rates the interaction as minor. Formoterol and Sacubitril-valsartan have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Formoterol can lower serum potassium via beta-2 stimulation, opposing the potassium-retaining effect of the angiotensin receptor blocker. Net potassium effect is generally small at inhaled doses, though cardiovascular effects may matter in susceptible patients.

How serious is the interaction between Formoterol and Sacubitril-valsartan?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine action is needed. Monitor serum potassium in patients on high doses or with other hypokalemic drugs or hyperkalemia risk.

What other medicines interact with Sacubitril-valsartan?

MediHelp also lists interactions of Sacubitril-valsartan with, for example, Aliskiren, Benazepril, Captopril. The full list is on the Sacubitril-valsartan page.

Full monographs, dosing and an interaction checker in the MediHelp app

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