weird color after colonoscopy prep

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New Member

Date Joined Sep 2008
Total Posts : 14
   Posted 9/29/2008 7:28 AM (GMT -6)   
i apologize if this is too graphic, but i tried to do a google search to see if this was common, and couldn't find anything. i've been having normal bowls, but, now i have the runs after my colonoscopy prep. well, i did my colonoscopy prep last night using the miralax/gatarade prep, and although all the stool has been liquid since starting the prep, at first it was brown, but after by my 3rd cup, it was a dark green, and after the 4th cup it has turned a bright green liquid stool. shocked shocked shocked i've been going through out the night, and many times this morning, and am wondering when this will stop. my colonoscopy is this afternoon, but i'm concerned, b/c i'm still going to the bathroom, and wondering why my stool is still bright green, when i had my last cup of prep 8pm last night. anyone else have this happen?

Elite Member

Date Joined Mar 2003
Total Posts : 10407
   Posted 9/29/2008 8:52 AM (GMT -6)   
If you used the green gatorade, that's probably the cause. The prep washes everything through you too quickly for colors to change. That's why they specify not to use red liquids - they can give the appearance of inflammation or blood.

Since you're (I assume) not drinking anything now, your output will stop as soon as all the fluids are flushed out of your body. It's not unusual to go that long, especially with the Miralax prep.
Judy - Southern US 
Moderate to severe left-sided UC (21 cm) diagnosed 2001.
Avascular necrosis in both shoulders is my "forever" gift from Entocort.
Colazal,  Remicade, Nature's Way Primadophilus Reuteri. In remission since April, 2006.
Co-Moderator UC Forum
Please remember to consult your health care provider when making health-related decisions.

New Member

Date Joined Sep 2008
Total Posts : 1
   Posted 9/29/2008 9:54 AM (GMT -6)   
I am new to this today and I'm having problems getting started but I was able to figure out how to reply to you.  I did not have a weird color but I did have the runs all night  and into the next morning.  Still am.  Every stinking night!  smhair I have a call into the doc right now. 
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