i just thought i'd mention to you that usually the gas and diarrhea go hand in hand for me when it comes to fiber and such. for me, at least (and i apologize for my blunt speech), when i was on other soluble fiber supplements and when i adjust my acacia or miss it for a while, i get gassy and bloaty and some loose, "airy" poops that aren't quite diarrhea. now, if i already have diarrhea, this stuff just makes it worse!
maybe it will help just to know that you're not the only one?
ps: my advice would be to stop the supplement if you think it's aggravating you and just wait to get acacia or another type of SF. stick with the heavy SF diet in the meantime. no point in doing something that's compounding the issue!