Potassium chloride

Potassium chloride is an inorganic mineral salt chemically similar to sodium chloride (table salt). As a food additive (E508), it serves as an acidity regulator, as a sodium-reduced or sodium-free salt substitute, as a firming agent in canned vegetables and tofu, and as a mineral supplement. It is frequently blended with sodium chloride in reduced-sodium products to maintain a salty taste while lowering the sodium content.

JECFA did not establish a numerical ADI for potassium chloride, classifying it as not specified — consistent with its status as an essential dietary mineral and a fundamental component of every human cell. The potassium from food-grade applications presents no concern for healthy individuals with functioning kidneys, which efficiently regulate potassium balance through urinary excretion.

Potassium chloride is approved universally — in the EU (E508), the United States (GRAS), Japan, Korea, and globally. From a cardiovascular standpoint, it is considered nutritionally positive for the general population, as most people consume insufficient potassium relative to sodium. However, individuals with impaired kidney function, or those taking potassium-sparing diuretics or ACE inhibitors, should monitor total potassium intake, as accumulation can cause dangerous hyperkalaemia. For everyone else, potassium chloride in food is safe and often beneficial.