I have eaten Napolis Cactus shredded in the jars and it works great for diabetis. and Diapen Tea from Mexico is an amazing tea for diabetis an has been used in Mexico for years. Also alkaline water does amazing things also.
EC: From our online research, "napolis" are prickly pear pads grown in Mexico, which you can find in US grocery stores.
Images of the prickly pear cactus here: