They are both designed to line the digestive system so that it does not get irritated by food. The Silicogel is like drinking wallpaper paste with grains of sand in and the Slippery Elm looks revolting, but it is an old and tried drug free remedy that still works ...... ( for me anyway).
SUICIDE OF MY GRANDCHILD - NO HELP


and I'm careful about spicy food - small amounts are usually OK. After a good rest from them, I've found that I can manage a small glass of orange juice or a small amount of tomato without too much discomfort.