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Aldactone drug interactions

Aldactone · spironolactone · by Multiple

Reviewed by the glpzoom Editorial Team against primary clinical sources — FDA labeling, peer-reviewed trials, and specialty-society guidelines.
Content current as of June 2026; updated when guidance or availability changes.
Most clinically significant: potassium-sparing effect — avoid combining with potassium supplements, ACE inhibitors, ARBs, or other potassium-sparing diuretics (hyperkalemia risk). Some patients on lithium need closer monitoring. May increase digoxin levels. Disclose all medications and check periodic potassium labs.

Interaction lookup

Search by medication name or drug class to see clinically meaningful Aldactone interactions.

  • Potassium supplements

    Moderate

    Class: potassium

    Hyperkalemia risk; avoid combination or monitor potassium closely.

  • ACE inhibitors / ARBs

    Moderate

    Class: RAAS blocker

    Additive hyperkalemia risk; periodic potassium monitoring.

  • NSAIDs (long-term)

    Moderate

    Class: NSAID

    Reduced diuretic effect + kidney function risk; consider acetaminophen if possible.

Editorial table from FDA labels + drug compendia. Not exhaustive. Discuss any concurrent medication, supplement, or condition with your prescriber before starting or stopping treatment.

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Frequently asked

What medications interact with Aldactone?+

Most clinically significant: potassium-sparing effect — avoid combining with potassium supplements, ACE inhibitors, ARBs, or other potassium-sparing diuretics (hyperkalemia risk). Some patients on lithium need closer monitoring. May increase digoxin levels. Disclose all medications and check periodic potassium labs.

Can I take Aldactone with metformin?+

Aldactone and metformin are commonly co-prescribed without major interaction concerns. GI side effects may be additive in some patients.

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