What Exactly Is sodium bicarbonate? Sodium Bicarbonate (NaHCO3) commonly called baking soda is a natural substance used in the human body within the bloodstream to regulate pH as a counterbalance to acid build up, which is critical to life. It affects the pH of cells and tissues, balances cell voltage, and increases CO2 which helps with oxygenation. Sodium Bicarbonate is a powerful medical tool that everyone would benefit by knowing more about. Dr Sircus Most of us keep a box of baking soda...