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Drug interactions

Shepherd's purse + Spironolactone

Severity: Minor

Shepherd's purse and Spironolactone: 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

Shepherd's purse has been reported to have effects on blood pressure and uterine tone, though the data are limited. It could theoretically blunt the blood pressure lowering effect of spironolactone. Clinical evidence of a real interaction is lacking.

What this interaction means in plain words

Shepherd's purse and Spironolactone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Evidence level: Low

Why it happens

Theoretical pharmacodynamic opposition on blood pressure; no established mechanism.

What to do

Advise patients taking spironolactone for hypertension to avoid shepherd's purse products. Check blood pressure if use is started.

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 Shepherd's purse with Spironolactone?

MediHelp rates the interaction as minor. Shepherd's purse and Spironolactone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Shepherd's purse has been reported to have effects on blood pressure and uterine tone, though the data are limited. It could theoretically blunt the blood pressure lowering effect of spironolactone. Clinical evidence of a real interaction is lacking.

How serious is the interaction between Shepherd's purse and Spironolactone?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Advise patients taking spironolactone for hypertension to avoid shepherd's purse products. Check blood pressure if use is started.

What other medicines interact with Spironolactone?

MediHelp also lists interactions of Spironolactone with, for example, Amiloride, Eplerenone, Triamterene. The full list is on the Spironolactone page.

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

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