The richest sources of potassium are fruits (e.g. banana, dried plums, prune, raisins, and orange) and vegetables (e.g., baked potato with skin, cooked spinach and artichoke) (25).
Potassium supplements are available as a number of different salts, including potassium chloride, citrate, gluconate, bicarbonate, and aspartate (28).
Most multivitamin-mineral supplements do not contain more than 99 mg potassium per serving. Higher doses of supplemental potassium are generally prescribed to prevent and treat potassium depletion and hypokalemia; their use requires supervision by a health care provider.