barbarum polysaccharide − could elicit important neuroprotection of the eyes.” The results of a year-long, double-blind, placebo-controlled study of 42 people with retinitis pigmentosa done in ...

The polysaccharides include cellulose(β-1,4-glucan), derived from wood cell-wall, paramylon (β-1,3-glucan), photochemically produced by euglena, glucomannan, obtained from konjac potatoes, curdlan ...