I do alright using flaxseed meal rather than the psyllium based fibers that you mentioned. I can use just a little in water, like the fiber drinks, or just sprinkle a little on my food. It's an actual food product and it has nutritional benefits, like omega 3. I buy the Bob's Red Mill that is available at Trader Joe's, because it's more affordable. It's already ground flaxseed meal.
I haven't heard of the Heather's Tummy Fibers, so I'll have to look for that.
Another thing about the psyllium fiber is that it irritates my GERD, as I have the IBS/GERD combination. That's also why I can't eat oatmeal.
I cannot take regular fiber either. You might check out Heather's Tummy Fibers for IBS. It's like lining your entire intestinal tract with Jell-O. Imagining that will make your tummy smile! It has definitely changed my life. Also eating oatmeal first thing in the morning...I know...but it works!
sounds exactly like me...i feel your pain...
sounds exactly like me...i feel your pain...