It is a patented high molecular weight carbohydrate with an average molecular weight of 500,000-700,000.
It is unique because it is specially processed to produce a molecular profile that is totally different from the sugars (e.g. glucose, fructose) and maltodextrin found in many products.
The molecular weight of maltodextrin is about 1,000-10,000 and that of dextrose is about 180.
With Vitargo you can make a drink with very low osmolality but with many carbohydrates.