The National Kidney Foundation and MedlinePlus provide comprehensive lists of potassium-rich foods on their websites. The websites of University of Maryland Medical Center and Colorado State University Extension also contain information on foods with high potassium content. WebMD lists top food sources of potassium, as well.
Potassium is an electrolyte that the body needs to maintain normal functions. It used during protein synthesis, acid-base balance maintenance and muscle building, states MedlinePlus. The body also needs potassium to control the heart’s electrical activity and to break down and use carbohydrates. Foods that are rich in potassium include bananas, apricots, chicken, potatoes and nuts.