Very dark almost black stool

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New Member

Date Joined Oct 2009
Total Posts : 4
   Posted 10/17/2009 4:49 PM (GMT -7)   
Over the past three months I nave had very dark almost black stool. After a few days it was back to normal. Anyone ever had this?

Rio in Maryland
Veteran Member

Date Joined Nov 2007
Total Posts : 891
   Posted 10/17/2009 4:58 PM (GMT -7)   
Very dark/almost black stool could be because of blood in the stool, especially if you're bleeding higher up the gut. Bleeding that is lower in the gut is typically more red as it's fresher bleeding.
Rio, 33 year old male. Diagnosed with UC in 2006
Azathioprine (stopped), 4800 mg Asacol
VSL#3 and Natren Trinity probiotics, Metamucil
Vitamin E enema or Canasa/Mesacol suppository occasionally

Regular Member

Date Joined Jun 2007
Total Posts : 364
   Posted 10/17/2009 5:25 PM (GMT -7)   
What medicines/supplements do you take? Iron supplements and Bi****h (PeptoBismol) can both cause black stool.

Oreos or Hydrox cookies can also cause black stool.

Have you had a recent blood test to check for anemia?

Mom of Son 18 UC dx 07/02, Lailda, Azasan 100 mg, Primadophilus Reuteri, Zyrtec, Iron, Vit/Min

Daughter 10 UC dx 08/07 Prednisone 5 mg, Colazal, 6MP 25 mg, Culturelle, Iron, Vit/Min.

Forum Moderator

Date Joined Dec 2008
Total Posts : 15392
   Posted 10/17/2009 5:28 PM (GMT -7)   
Do you take supplements? I take a lot of iron pills and certain ones cause darker stool. Other ones don't.
Diagnosed with mild proctitis in March 2007: Treated with Canasa (as needed)
Horrible relapse: August 08 - December 08: Began treating with Asacol 400mg (9/day) + Canasa 2x/day - Anemic
Canasa nightly + Asacol (9/day) + Probiotics + Iron

Regular Member

Date Joined Oct 2009
Total Posts : 75
   Posted 10/17/2009 6:20 PM (GMT -7)   
I had bouts of Dark like that then the next one would be lighter before i got to the doc and started my Med. He told me it was blood that was either higher up or blood that sat in the intestines for a little while. I only had it when my flare was at it's worst for about 2 days along with alot of pain and mucas.
Female 43 years old
UC since 2003  been in remission till 4 weeks ago.
 Meds: Rowasa Enamas Only thing I can handle.
            Xanax for anxiety.
            Nortriptioline for depression.
                 ** Just want to be Normal Again**

New Member

Date Joined Oct 2009
Total Posts : 14
   Posted 10/17/2009 7:19 PM (GMT -7)   
Sandy, you said you had pain high up .stomach ulcers can cause dark stools .just a a suggestion :)
25 male
Diagnosed Sept/23/2009
Prednisone 60mg,tapering, down to 25mg
Pentasa 3000mg
Cod Liver Oil
Symptom free since Sept/25/2009

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