OSMO PREP How long to work?

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Veteran Member

Date Joined Feb 2007
Total Posts : 734
   Posted 3/31/2008 10:37 PM (GMT -6)   
Hi, I saw my GI today been sick for three months.  He put me on Osmoprep for a Colonoscopy tomorrow and I started my dose at 6:00 p.m. now 8:30, nothing yet?  Is this normal.  I haven't eaten today or much the days before, but shouldn't something be coming??  I feel nauseated.  Any ideas?  ASAP

Regular Member

Date Joined Feb 2008
Total Posts : 92
   Posted 4/1/2008 1:38 AM (GMT -6)   
I've never used osmoprep but my suggestion would be to drink as much water as you can stand. Things should start moving soon.

Best of luck!
Dx: Crohn’s Ileitis as of 22/02/08
Rx: Salofalk 4g/day (26/02/08)
9mg Budesonide (one capsule 3 times per day for the next 6 weeks)

Discontinued meds:
Asacol 2.4g
Pentasa 4g

Veteran Member

Date Joined Oct 2004
Total Posts : 3042
   Posted 4/1/2008 8:01 AM (GMT -6)   
Make sure you drink plenty water to flush your system.
Hi, I am teddybearweiser, I am a male.
I was diagnosed with crohns disease when i was admitted to the hospital
in 1992, in Jan of 1993 I was back in the hospital for surgery for my crohns. I had part of my right colon resectioned with ilecolonstomy.
 My GI doctor has me on Asacol, Dicyclomine,Imuran,Celebrex and Remicade. B-12 injection once a month.
My Internest doctor has me on Lisnopril-HTCZ and Folic Acid. Diagnosed
with Osteoarthritis July 2007

Regular Member

Date Joined Oct 2007
Total Posts : 289
   Posted 4/1/2008 8:32 AM (GMT -6)   

Iv'e done OsmoPrep twice,and it worked within an hour for me,it's alot of pills,isn't it??


Good luck with the scope :-)

Regular Member

Date Joined Jul 2007
Total Posts : 73
   Posted 4/1/2008 12:36 PM (GMT -6)   
It took me well over 3 hours to get results from it. I was not able to get all the pills down because I just couldn't drink anymore water because I was so full. It's not a plesant wait, but it will start working.
Munchkin 81
26 year old female.  DX June 2007.
abscess Nov. 2006 - drain and surgery
currently taking 800mg Asacol 3xday, 5mg Prednisone,Aciphex 20mg 2xday 
Resection 11/07

Regular Member

Date Joined Jul 2004
Total Posts : 422
   Posted 4/1/2008 12:36 PM (GMT -6)   
I've taken OsmoPrep twice. The first time, it started working within the first FEW hours. The second time the BIG D didn't start until after 1AM!!!!

So how did it go???
Diagnosed in October, 2004 at age 33.
Currently taking Colazal, Nexium, One-A-Day multivitamin, Omega-3 Fish Oil, Vitamin D, Vitamin A
Secondary conditions: mouth ulcers, joint pain, extreme fatigue

Veteran Member

Date Joined Feb 2007
Total Posts : 734
   Posted 4/1/2008 2:51 PM (GMT -6)   
Hi Guys,  Thanks for your responses.  It took two hours to start and then all night.  Now I'm second dosing and worried it's not going to start before I leave for my scope.  I have been sick since first of year.  Upper Bacterial infection in my head, ear infections.  Two doses of antibiotics, which gave me C Diff.  Then horrendous cramping and constant D.  Finally after two trips to Urgent Care, saw my GI yesterday and he scheduled me today for a Colonoscopy at 4:30.  I'm Mountain Standard.  Appreciate your responses.  These pills seem slow.  I will let you know what they find.  I have been on Remicade for 3 years.  He just took me off Methotrexate and everything went bad.  Oh and also an anal fissure.  So I've been on alot of stuff and lost 18 pounds.   Good news, I have it to lose.  So thanks again,
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