I think it was because when I was feeling really bad, no amount of fiber (SF or IF) made me "go" and often the bloating and fullness got even worse.
As of now I don't take any supplements besides the Citrucel I mentioned before, and I don't feel any worse. I just got really tired of taking so much stuff and never feeling like a healthy person anyway. I don't even take the peppermint caps or drink the teas. I think it's because last year I must have drank an ocean's worth of fennel and peppermint tea and frankly, I just got tired of it. I used to like it (well, the fennel tea I could tolerate but never craved it, lol) but towards the end I was really sick of it. I felt like me body just needed a break! I still generally stick to the diet (no salads on empty stomach, milk, fried foods, coffee, etc.) but I would also like if my body could stabilize on its own, without supplements. A long way to go I guess...