Whey protein can also be used to manage protein malnutrition condition and other immune deficiencies. This is because this supplement is rich in proteins, mineral salts and residual lactose. Proteins are the component of food that is used to build or repair body cells. It is the primary input in growth and development. Whey protein has now become very popular among masses especially bodybuilders and people who exercise regularly. Owing to this fact many stores sell whey protein and are easily available over medical counters too. But it is wise to buy Whey Protein Online. It saves you from the hassle of going and physically buying the product. You can order in large quantities and also avail discounts at some online stores.