Green Stool for a few days (I didn't eat spinach)

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Regular Member

Date Joined Jul 2010
Total Posts : 65
   Posted 4/12/2011 11:56 AM (GMT -6)   
Hi guys,

Since yesterday morning I've had green stools, but I haven't eaten anything greenish like asparagus or spinach that usually turn stools green. I though It would have been just a one time thing, but all of my stools yesterday were green. Again this morning it was green and looser (still formed, but when I flushed it got cloudy). Yesterday I was very gassy and today I've had some gut pain, but nothing bad, I've just been once to the bathroom today.

What may this be? any ideas? should I worry or something?

Oh, I should also say that I switched from Lialda to Pentasa 2 weeks ago. I initially thought that may be a cause, but the change was sudden and like a week and a half after I switched. Anyway, any help would be appreciated!
Male, 25, from Chile, studying in the US
Diagnosed with Mild Ulcerative Proctitis, 10 cm, diagnosed on July 2010
Minor bleeding began in March 2010, Big flare began in July 2010 right after being diagnosed

Currently on:
Prednisone, went up from 20 to 40 mg a day, Aug 2010
Hydrocortisone suppositories, 1 before bedtime

Veteran Member

Date Joined May 2010
Total Posts : 8381
   Posted 4/12/2011 12:23 PM (GMT -6)   
When feces move too fast through the digestive tract, bile does not have enough time to finish its process and remains green.

This is usually attributed to a virus that will pass in a couple of days. Given that you're an IBD patient, if the pain continues I'd suggest calling your DR.
48 yrs old, IBD diagnosis in spring '01. Proctitis, gastritis, ileitis.
Currently taking Pentasa (3g/day), Sulfazine (1.5 g/day), Prevacid, folic acid, vit. D (2K iu), flax seed oil (2 tsp/day), mesalamine enema as needed.

Forum Moderator

Date Joined Dec 2008
Total Posts : 14538
   Posted 4/12/2011 1:22 PM (GMT -6)   
Do you take iron pills? Those can make your stools greenish or even dark brown, almost black looking.
Co-moderator: Ulcerative Colitis
03/07: Diagnosis: Mild Proctitis | 08/08: Diagnosis: Pancolitis - FLARE & Anemic! Asacol (3600mg) + Canasa (1000mg morning/night) | 01/10: FLARE! Prednisone + Cortifoam + Asacol + Canasa + Rowasa | Currently: stable - Asacol (3200mg) + Canasa (nightly) + 6mp + Allopurinol + Prednisone + Ponstel + Klonopin + Ambien

Veteran Member

Date Joined Jul 2007
Total Posts : 1956
   Posted 4/12/2011 1:52 PM (GMT -6)   
Fresh blueberries turned my stool an army green once (when I had a temporary colostomy).
- Rectal CA 4/29/99, Stage I, 90% sigmoid/15" of colon/GB removed, temporary colostomy, reversed 6-26-99
- Chronic IBS/D symptoms, multiple bm's, on low residue diet
- Colace 50 mg, twice daily + Probiotic: Renew Life/Ultimate Flora/Critical Care/80 Billion daily
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