Highly bioavailable potassium. Potassium deficiency is related to sugar cravings, heart health (blood pressure, irregular or fast heart rate), muscle cramps, mood swings, numbness, constipation, excess urination impaired sleep and more. Potassium is a very important mineral for the proper functioning of all cells, tissues, and organs in the human body. Potassium is crucial to heart function, and plays a key role in skeletal and smooth muscle contraction, making it important for normal digestive and muscular function.