Every manufacturer must carefully select the ingredients used in their products to ensure that the product will work as describe, be attractive to consumers and be cost effective. Unfortunately, many manufacturers fail to determine whether their chosen ingredients are approved for the intended use. Not all ingredients that may be used in dietary supplements are permitted in foods and beverages. It also happens that ingredients used in foods and cosmetics in other parts or the world are prohibited from use in the U.S. or are only permitted for certain applications at tightly prescribed levels.