Examples include simple sugars such as D-glucose and sucrose, polysaccharides such as a starch guar gum and dextran, and synthetic polymers such as poly(vinyl alcohol-co-vinyl acetate), poly(vinyl pyrrolidone), poly(ethylene glycol), poly(propylene glycol), poly(N-vinyl pyrrolidone-co-vinyl acetate), polystyrene sulfonate, and pharmaceutical-grade derivatized celluloses such as 2-hydroxyethyl carb