PI-IBS: Fast Transit & Black "Specks"

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Went through three antibiotic treatments for c.diff and have been "clear" of that infection since end of December but have been dealing with PI-IBS ever since (colonoscopy in January ruled out IBD, etc. for causes of my symptoms).

Have been doing better the last few weeks or so aside from intermittent colon pains, rumbling stomach, and persistent food intolerances. My only, main concerns at the moment is a fast transit time resulting in a lot of undigested food and black "specks" found occasionally on the toilet paper after wiping (truly hope this is not too TMI).

My stools are normal colored and I never see the black specks on/in the stool, just when wiping. Have heard it could be undigested food (banana, spinach, iron rich foods, etc.), bacteria die-off (would hope not 4ish months after c.diff), or, of course, blood from upper portions of my GI.

Going to call my GI about this but curious if anyone has experienced similar and if they determined a cause. Additionally, do I just accept my new, rapid transit or is there way(s) to slow down my digestion?

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  • Edited


    Black specks can be dried blood, I do not know if this is normal because of Cdif, all I know about that was with our dog who took over twelve months to get over it as a puppy. 

    Yes I know you are not a dog, al I know He had to be careful what He ate and sometimes at six years old can become vomitty

    Talk to your GP He may want to do some tests


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  • Posted

    Hi do you eat Brocolli as I see black specs or on wiping but it's been undigested brocolli or do you have jams with pips

    I had semonella 6 months ago and my bowels have never been the same. Loads food intolerance. And undigested and never one solid piece small pieces pencil or worm pieces depending on what I eat loose stools.

    I think anxiety speeds up the digestion and also certain foods

    I am on the fodmap diet now. Helping a bit

    Having a colonoscopy and endoscopy Monday hopefully they'll find nothing serious

    I think apart from pi ibs it could be sibo possibly?

    Goodluck and ask doctor if unsure

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    • Posted

      Hope you get negative results from your colonoscopy and endoscopy on Monday!

      I don't often eat brocolli but do eat spinach and some seasoning which I've heard might not be digested properly especially with a faster transit.

      Might get tested for SIBO but the treatment is antibiotics which could cause a relapse of my bacterial infection and not sure I feel comfortable taking that risk at the moment.

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    • Posted

      Thanks for your wishes

      I agree having antibiotics could trigger it.

      It's a hard decision what to do - I'm in the same predicament -if they don't find anything whether then to check for sibo.

      None of this is fun hey. sad

      Take care

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    • Posted


      Both tests were okay.

      So glad nothing serious was found but still have to live with this.

      Gastro doctor said I should go on 10 days flagyl as she thought I've got sibo or PIIBS

      Will go on the flagyl

      But she said if it doesn't help I'll just have to live with it - keep on the fodmap diet and try normafibre.

      Hope you're doing okay

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    • Posted

      Flagyl is not a treatment for either SIBO or PI-IBS and one of its major side effects is GI upset. If it were me, I'd refuse that treatment.

      The antibiotic for SIBO is Xifaxan. There are medications for IBS but flagyl isn't one of them.

      Am doing a bit better here so no complaints. Just one day at a time.

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  • Posted

    Fast transit time is a symptom of IBS D.  I would have thought a colonoscopy/endoscopy would have picked up bleeding if this was the cause.


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