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Potassium × Potassium Sparing Diuretics

CRITICAL INTERACTION — Well-Established Evidence

⚠️ Mechanism

Potassium-sparing diuretics reduce potassium excretion. Potassium supplements add to this effect.

📋 Effect

Hyperkalemia; cardiac arrhythmia risk

💊 Management

Avoid potassium supplements. Monitor serum potassium closely.

Plain Language Summary

This combination is dangerous. Taking potassium supplements while using these diuretics can cause your potassium levels to become dangerously high, which may lead to serious heart rhythm problems.

Source

FDA spironolactone labeling

Supporting Research

Sex-specific associations between sodium and potassium intake and overall and cause-specific mortality: a large prospective U.S. cohort study, systematic review, and updated meta-analysis of cohort studies PMID:38519925 DOI:10.1186/s12916-024-03350-x 2024
Blood pressure-lowering efficacy of monotherapy with thiazide diuretics for primary hypertension PMID:24869750 DOI:10.1002/14651858.CD003824.pub2 2014
Replacing salt with low-sodium salt substitutes (LSSS) for cardiovascular health in adults, children and pregnant women PMID:35944931 DOI:10.1002/14651858.CD015207 2022
Oral protein-based supplements versus placebo or no treatment for people with chronic kidney disease requiring dialysis PMID:32390133 DOI:10.1002/14651858.CD012616.pub2 2020
Effect of increased potassium intake on cardiovascular risk factors and disease: systematic review and meta-analyses PMID:23558164 DOI:10.1136/bmj.f1378 2013
Buffered solutions versus 0.9% saline for resuscitation in critically ill adults and children PMID:31334842 DOI:10.1002/14651858.CD012247.pub2 2019
Global mean potassium intake: a systematic review and Bayesian meta-analysis PMID:36882596 DOI:10.1007/s00394-023-03128-6 2023
Single dose oral diclofenac for acute postoperative pain in adults PMID:26151766 DOI:10.1002/14651858.CD004768.pub3 2015
Medical Disclaimer: This interaction record is for informational and educational purposes only and does not constitute medical advice. Drug-supplement interactions can be dangerous. Always consult your healthcare provider or pharmacist before combining any supplement with prescription medications. Do not stop or change any medication without professional guidance.