fq: The only thing that has ever really wonked things up for me is probiotics. I've tried them on 2 separate occasions and each time I've gone on a round of antibiotics to kill them off again. I know I could just wait it out until the effects wear off, but I'm impatient.
My toilet visits range from 5 minutes to 30 minutes, but the longer ones usually are more due to my reading internet articles on my phone than anything else. Generally things take about 5-10 minutes if I'm focused on the task at hand, otherwise it's just a nice break in the day.
As for butt burn, I don't really have any. I had some last week for exactly 1 bathroom visit, then it was gone. All that extra intestine must soak up all that extra acid.
So now I'm just waiting for this round of antibiotics to but the probiotics I took to rest so things can get back to normal. No more probiotics for me.