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Moderate human evidenceEssential mineral / electrolyte

Potassium

Potassium supports cell electrical gradients, muscle function and fluid balance. Potassium-rich diets and potassium supplements are not interchangeable safety decisions.

Also indexed as: Potassium citrate · Potassium chloride · K

A clear starting point

Potassium supports cell electrical gradients, muscle function and fluid balance. Potassium-rich diets and potassium supplements are not interchangeable safety decisions.

Systems mapping shows biological relevance, not a treatment recommendation or a patient CPI score.

Molecular formula: K

No validated chemical structure is displayed in this edition.

How it works

Membrane electrical gradients / renal electrolyte regulation

Potassium supports cell electrical gradients, muscle function and fluid balance. Potassium-rich diets and potassium supplements are not interchangeable safety decisions.

Targets & processes
Cellular potassium gradients and membrane transport systems.
Systems & tissues
Nerves, skeletal and cardiac muscle, kidneys and fluid balance.

What does the evidence show?

Human evidence supports a role for potassium intake in blood-pressure regulation, especially within healthy dietary patterns.

What this does not establish

Benefits depend on context; a laboratory electrolyte abnormality requires medical interpretation and is not a self-treatment target.

NIH ODS: Potassium — Health Professional Fact Sheet

Official educational / regulatory source · Official educational source

Human evidence supports a role for potassium intake in blood-pressure regulation, especially within healthy dietary patterns.

Limitations: Benefits depend on context; a laboratory electrolyte abnormality requires medical interpretation and is not a self-treatment target.

Citation metadata from PubMed, a service of the U.S. National Library of Medicine, NIH. A citation match is not a guarantee of study quality. Abstracts are not full-text reviews.

Safety is a separate question

Excess blood potassium can cause dangerous cardiac rhythm disturbances. Risk rises with impaired kidney excretion or interacting medicines.

Contraindications & cautions

Kidney impairment or known hyperkalemia is a major reason to avoid unsupervised potassium supplementation or potassium-based salt substitutes.

Medication & supplement interactions

ACE inhibitors, ARBs and potassium-sparing diuretics can increase hyperkalemia risk.

Regulatory status · United States

United States: dietary-supplement status is product-specific, not FDA approval of disease treatment. Food, supplement and drug formulations must not be assumed interchangeable.

Read the official source

This is not an exhaustive safety list. Regulatory status varies by jurisdiction and product; investigational use is not approval.

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Education, not a prescription. Research summaries are not medical advice, dosing instructions, or an offer to sell. Mechanistic findings do not establish clinical effectiveness. US regulatory status is product- and indication-specific and may change. Discuss health decisions with a licensed clinician.