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The original was posted on /r/tifu by /u/HomeComprehensive684 on 2025-10-07 15:43:20+00:00.

So Im on a weight loss journey right now which includes taking Mounjaro. If you know, you know—-the GLP1s/GIPs have a reputation for slowing digestion down to a snails pace which can lead to some uncomfortable restroom visits. I bought a big container of benefiber from Costco to help assist my sluggish bowels.

I didn’t read the label and I was annoyed there wasn’t a scoop so I just used the scoop from my collagen powder that I also add to my coffee. One scoop of collagen, one scoop of benefiber. Breakfast of champions. Drank that Sunday & yesterday. For whatever reason I decided to read the label yesterday after drinking my coffee & turns out 2tsp is a serving. The scoop is BIG (approximately 8-9 tsp). Last night I woke up and it was ugly. clothes off sweating like I’ve ran a marathon, gripping anything I can when not holding onto the trash can to puke in because I did not dare lift my tushy off the terlet. I sat there for a good hour contemplating that this would be the literally poopiest way to die but also too embarrassed to wake my husband up to take me to see a doctor. It eventually ended and I crawled back to bed. I think I’m ok today and will not be taking any benefiber.

TL;DR-took 4-5x amount of fiber over 2 days and it was violently expelled from my body last night over the course of an hour.