Aluminum-free, gluten-free and sodium-free, Ener-g baking soda is designed specifically for individuals on Kidney Dialysis who must avoid sodium bicarbonate, potassium bicarbonate, and who require higher intakes of calcium. Ener-G Baking Soda is free of sodium, potassium, aluminum, and is high in calcium. Baking soda and baking powder are leavening agents in baked goods. They create the necessary gas for breads, cakes, muffins, etc. to rise. You don't have to miss out on your favorite baking recipes - just substitute Ener-G baking soda, following the directions on the package, and you'll be enjoying those fluffy breads and cakes again in no time!