NOW® Egg white Protein powder is an excellent natural source of high quality protein. Our egg white powder is sourced exclusively from free run (cage free) chickens. Contains natural preservatives Citric acid and Baker’s Yeast (inactive). It is fat-free and low in carbohydrates and rates as one of the highest quality proteins using the PDCAAS (Protein Digestibility Corrected Amino Acid Score). This Egg white powder is pasteurized which inactivates the avidin glycoprotein. Biotin fortification is not necessary for this product.