A good source of potassium citrate, tomatoes can help to lower your blood pressure while they're protecting your bones. With 11.4 percent of your daily requirement of potassium in a single cup, eating more tomatoes is one easy way to help fight high blood pressure with diet rather than relying on supplements or prescription medications [source: Your Total Health].
Other foods high in potassium citrate are bananas, citrus, salmon, tuna, spinach, potatoes, yogurt and poultry. Having a low potassium level can result in loss of energy, muscle cramps and an irregular heartbeat. For some conditions like kidney disease, increased potassium intake is contraindicated, so before you make any big changes, check with your doctor.