I'm relatively new too and at first I didn't want to order the Acacia b/c I was generally scared of fiber anyway, being IBS-D. Now I take Acacia and so far so good (just learning how to incorporate the diet for maximum results), but if you want to explore the website more and try a drug store brand, I would recommend Fibercon. I took it for a week or so and I could see a bit of a difference.
-------------------- Originally IBS-D for a million years!
Then IBS-A, Now a transformed slightly C