Used in fertilizers to supply potassium, an essential nutrient for plant growth, especially in crops like potatoes, tomatoes, and corn. Commonly used in medicine to treat or prevent low potassium levels in the blood (hypokalemia). Serves as a salt substitute in food for people on low-sodium diets, helping reduce sodium intake without sacrificing taste. Employed in the production of potassium hydroxide and other potassium compounds in industrial processes. Used in some de-icing products as it is less harmful to plants and concrete than calcium chloride or sodium chloride. Applied in laboratory settings as a buffering agent or electrolyte in chemical and biological experiments. Utilized in lethal injection protocols in some regions, where it stops the heart after anesthesia and paralysis.