Complex carbohydrate powder phd waxy vol contains pure barley powder and is derived from finest uk crop barley is recognised as a complex carbohydrate a carbohydrate is the most abundant natural organic compound that consists only of carbon hydrogen and oxygen they occur naturally in a variety of foods in simplistic terms and in food science carbohydrates can be broken down into two forms though in truth it is slightly more comprehensive than this and these are simple sugars and comple