Deficiency, Dependency, and Toxicity Potassium

• Hyperkalemia
• Hypokalemia

• Health: Nutrition: Nutrients: Vitamins and Minerals: Potassium 
• Science: Chemistry: Elements: Potassium 

• Merck Manual: Potassium  - Describes why this mineral is important, as well as the causes, symptoms, treatment of system imbalances.
• My Electronic MD: Potassium Imbalance  - Brief article presents an overview of potassium functions, as well as causes, signs, and symptoms of elevated or reduced levels.