Potassium chloride is “generally regarded as safe” by the Food and Drug Administration (FDA).2193 The reason healthy people don’t have to worry about getting too much potassium is that our kidneys just pee out the excess.2194 However, people with known kidney disease, diabetes (since diabetes can lead to kidney damage), severe heart failure, or adrenal insufficiency, and those on medications that impair potassium excretion need to be careful.
