Here is what I found on mannitol:
"Mannitol, a naturally occurring alcohol, is widely used in the food, pharmaceutical, medicine, and chemical industries. It is currently produced as a 25/75 mixture of mannitol and sorbitol (another sugar alcohol) by high pressure hydrogenation of 50/50 fructose/glucose mixture (corn derived sugars) in an aqueous solution at high temperature with a catalyst." http://www.ars.usda....q_no_115=189024
I am not sure if there is such a thing as corn free mannitol. Maybe another corn free expert on this board can enlighten us?