All are minerals such as sodium, potassium, calcium, and magnesium.
Want more potassium in your diet? Eat one medium baked potato with the skin on for 900 mg of potassium and about 20% of your daily goal. Bananas, oranges, and many other fruits, vegetables and fish are great sources too. Consuming a sufficient amount of potassium may help counterbalance the negative affects of consuming too much sodium. (Source: http://www.hsph.harvard.edu/nutritionsource/salt-and-sodium/sodium-health-risks-and-disease/)
There is no evidence of chronic excess of potassium in apparently healthy individuals. (Source: Institute of Medicine, 2004)
To learn more about the CDC's views on diets high in sodium and low in potassium, visit the CDC website at: www.cdc.gov/salt.