I had the feeling I couldn’t poop for some reason for two days, I also had some sickness from being exposed to too much AC (the doctor said), the doctor gave me medicine against the other stuff which works wonderfully. But my stomach hurt a lot so I ordered a 1 liter bottle of prune juice because I heard it helps against constipation.
Once it arrived I drank the whole bottle at once just to be sure, because I heard it’s a natural mild laxative and my stomach hurt so much.
And it worked very well, after 2 hours I was running to the toilet and getting rid of whatever was stuck in there. It worked very well, my stomach stopped hurting after one more hour, wonderful!
But I didn’t need to drink the whole bottle, I’m stuck on the toilet the whole afternoon now because as soon as I get out, 2 minutes later I need to run back in, so it’s just easier to stay on it.
I think like a cup or two might have been enough.
Inulin has an opposite effect. It’s a natural fiber. You can mix a few teaspoons into a glass of water and it will fix your gut flora and converts diarrhea (not caused by a sickness) into some farts and solid poop.
My wife found some lightweight anti dhiaria medicine from back when she was pregnant. I took two of it and what happened is exactly what you describe too.