I bought one package, but I'm not really comfortable about using it.

Instead, I plan to look for guar gum in another brand, or any vegetable gum that's mostly fiber, if I can find it.

If not, then I'll do without. After reading this thread, I no longer feel the need to eat lots of fiber each day- if I select high fiber foods that day, that's great, but it's no longer something I'm going to worry about.