While you are limiting your salt intake, make sure you have enough of potassium-rich fruits and vegetables. Potassium acts as a vasodilator; it negates the ill-effects of sodium. Potassium helps you expel extra sodium in your system through your urine. Some of the high-potassium foods you can include in your diet are bananas, spinach, guavas, flaxseeds, ajwain, etc.