Do you mean isphagula husks? Used to treat constipation- they are allowed on cd i believe. Can get them from health food shops, i got some from barrats. They are a bit like granules of bran, no real taste as such. You put a few spoons (can't remember how much) into water stir like mad then drink. Its not nice as they do not dissolve and its like drinking grit but they do work. Some people sprinkle them into foods/porridge to make it more palatable. Personally i used to drink it and get it over with asap! Hope it helps xx