Which Colonoscopy Prep Solution?

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Regular Member

Date Joined Apr 2005
Total Posts : 386
   Posted 8/1/2009 10:38 AM (GMT -7)   
I am scheduled for my annual colonoscopy next month. My G.I. informed me that I can no longer use Fleet Phospho Soda. This will be my 16th colonoscopy and I am so bummed, because I really had a good routine down with the Fleet. Although it tasted horrible, it was easy for me to digest (never threw up) and I never had any cramping or side effects with it.
He prescribed for me TriLyte and 2 Dulcolas tablets. I am really nervous about switching. This seems like a heck of a lot of fluid to consume in comparison to the Fleet.  Can anyone tell me if they have had any good or bad experience with this prep? Also, if anyone knows of a prep solution that is easier to tolerate, I would appreciate the info.
Thank you so much!

Veteran Member

Date Joined Feb 2009
Total Posts : 529
   Posted 8/1/2009 11:01 AM (GMT -7)   
If you live in Canada, buy Pico-Salax, it tastes a million times better and it's only 2 glasses to drink. The 1 gallon preps taste really really bad, I can't keep them down lol. Some GIs will also prescribe a pill prep if you ask them for it, it's called Osmoprep I think.

Veteran Member

Date Joined Dec 2005
Total Posts : 1768
   Posted 8/1/2009 12:09 PM (GMT -7)   
The easiest one is doing a Miralax prep. The night before prep day you take 4 dulcolax tablets. Then you get a bottle of Miralax, mix it into 2 32 oz bottles of Gatorade, and drink it all. (they tell you to mix the Gatorade/Miralax a day before and let it sit in the fridge and cool-it makes it mix better) It is a lot to drink, but it doesn't taste like anything but the Gatorade you put it in.

I've had to do all the others, and for me this is the easiest! Like I said, it's a lot to drink, but if you can steadily drink, you can make it through!

31 yr old female-dx with Crohn's in '97 after emergency resection and appendectomy, 2nd resection '05
Currently on Humira, Prilosec, Effexor, Seroquel, Calcium, Vit D, sublingual B12; phenergan, ultram, clonazepam as needed

Veteran Member

Date Joined Nov 2005
Total Posts : 1340
   Posted 8/1/2009 1:03 PM (GMT -7)   
Have you ever done the pills before? I know some people prefer them, but they made me ill (worse than any drink). My GI heard similar complaints and no longer uses them. I just did a prep w/ 4L of the solution. It was the easiest ever. If you gulp down each glass (with a straw very cold) and don't drag it out it is WAY better. I couldn't believe how easy this last one was.

Regular Member

Date Joined Apr 2007
Total Posts : 208
   Posted 8/1/2009 1:21 PM (GMT -7)   
The Miralax prep was the best one I've used. All others made me sick and by 2 a.m. I'd be vomiting. Nothing like that with Miralax.

Regular Member

Date Joined Apr 2005
Total Posts : 386
   Posted 8/1/2009 1:31 PM (GMT -7)   
Thank you, I will call my doctor and ask about the Miralax prep. Becky, when you take the 4 Dulcolax tablets the night before the prep, do you need to stay close to a potty all day. I usually work the day of my prep.

Thank you so much!

Veteran Member

Date Joined Apr 2005
Total Posts : 3763
   Posted 8/1/2009 1:44 PM (GMT -7)   
I have only done the pill preps for the last 4 years or so, but the last time I was in to see my GI I thought he said they were also not allowed like the Fleet Phospho Soda. If you can get the pills, they are by far the easiest. You still have to drink liquid, but it is any clear liquid of your choice. I have a huge issue with tasting things, so if I don't have to taste a nasty liquid, I am all for it. I'm not sure what I am going to do next time I have to do a prep.

CD 20 years officially, 30 unofficially. 3 resections '93, '95 '97
Managing with strict low residue diet, keeping symptoms to a minimum. All test show small amount of ulceration, still have occasional blockages. But still have a great time with my 2 daughters and husband!

Prednisone, 6MP,Prevacid, B12 shots, Bentyl, Xifaxan.....

Veteran Member

Date Joined Apr 2006
Total Posts : 686
   Posted 8/1/2009 4:06 PM (GMT -7)   
My doc has me take 2 dulcolax at about 10am and then the Miralax at about 4pm. The beauty of the miralax is that it is tasteless. You can mix it into 64oz of any (hot or cold) fluid as long as it's not red.

Remicade and 6MP

Veteran Member

Date Joined Dec 2005
Total Posts : 1768
   Posted 8/1/2009 6:40 PM (GMT -7)   
My dr had me take the dulcolax the night before prep day, and it doesn't effect you all the next day, it just makes you go when you wake up in the morning. Then you do the Miralax the evening before the prep day.

31 yr old female-dx with Crohn's in '97 after emergency resection and appendectomy, 2nd resection '05
Currently on Humira, Prilosec, Effexor, Seroquel, Calcium, Vit D, sublingual B12; phenergan, ultram, clonazepam as needed

Regular Member

Date Joined Oct 2008
Total Posts : 23
   Posted 8/2/2009 6:30 AM (GMT -7)   
All great info!  Im due for another prep soon, and I was wondering about this subject.  Thank you. smilewinkgrin
Diagnosed with Crohns in 2006
Diagnosed with Rheumatoid Arthritis 2008
Currently on Prednisone, Remicade, Vicotin. 

Veteran Member

Date Joined Dec 2006
Total Posts : 559
   Posted 8/3/2009 3:09 AM (GMT -7)   
I personally refuse to take Dulcolax no matter what the GI says. It belongs to a class of drugs known as "irritant laxatives," other examples being Ex-Lax, Per-Diem and Senokot. All of these run the risk of inflaming the intestine and bringing on ileus (obstruction) if your intestine is already very narrow and inflamed.

Lisalee37, did your GI give any indication why you can't take Fleet Phospho Soda, which has worked so well for you in the past?

best regards,
Crohn's since 1988
3 resections

Veteran Member

Date Joined Jan 2005
Total Posts : 1825
   Posted 8/3/2009 6:55 AM (GMT -7)   
This is such a timely post as I'm due for my annual on Monday.

Ozone -- Fleet was pulled by the FDA I think due to kidney damage.

Regular Member

Date Joined Jun 2009
Total Posts : 202
   Posted 8/3/2009 1:31 PM (GMT -7)   
I would take the Miralax prep over the Fleet Phospha Soda one ANY day.  I could never hack the Fleet.  It gagged me.  So for other ones they gave me the same stuff but in pill form - huge, horse size pills.  That was more tolerable.  My last colonoscopy was with the Miralax prep.  Wow - what a nice difference.

Crohn's Disease. 
Diagnosed 13+ years ago. 
Been in remission for short periods of time but each time I come out of remission my disease seems to have spread.  No longer isolated in my ileum, now from stomach down to rectum.  Currently have C-Diff.
Current Medications for the Crohns:  Humera 40mg injections every other week, Imuran 150mg, 3xday, Hyomax, Welchol 625mg, Flagyl 250mg, 3xday, Calcium, Acidophilus & Potassium
Previous Medications I've been on:  Asocal, Pentasa, Cipro, Prednisone & Entocort

Regular Member

Date Joined Jul 2008
Total Posts : 440
   Posted 8/3/2009 5:56 PM (GMT -7)   
 I have to say I agree with "Ozonehole" I do NOT take the dupolax pills....or for that matter no pills! I'll end up in the ER from being dehydrated. I do take the day off of work before. I use the Go-Litlye...and only drink maybe half because I eat light the two days before...and know when I'm cleaned out. When I've used the Miralx ....ER too... from being dehydrated. I'm just really sensitive. I think you just have to know your own body.
 If you have had 16 colonosopys I would think you know yourself pretty well. Go with you instincts.
 41 yr old woman with 12 surgerys under my belt. Diagnosed in 2005 CD. PTSD 1999. Gullbladder taken 2000, Hysterectomy 2005, Back surgery 1998 with herniation L-4, L-5, S-1. Two-Re-sections on small intestine, total of 18 inches taken out 2006. Stomach Herniation from re-section 2007, Been getting kidney stones too! The good news...finding this website.
                Meds: Imuran 200mg daily, asacol, Bentyl, Coelestid, occasional flagyl and cipro, high blood pressure meds, paxil 25 mg, 4/20meq's potassium, synthroid...& try to get alot of laughter in.

Regular Member

Date Joined Jan 2009
Total Posts : 209
   Posted 8/3/2009 7:20 PM (GMT -7)   
I'm one that hates them all...
Next time I'm going to ask for that
new magic pill that i've seen in the
Crohns magazines...
B-12injections,Pentasa,Loperamide,Entocort,6mp,Hydrochlorothiazide,8 week
Remission since surgery
and 8-week Remicade.

Veteran Member

Date Joined Jun 2008
Total Posts : 1058
   Posted 8/3/2009 9:54 PM (GMT -7)   
I think I know why doctors are not using the fleet Phospha soda any more: Roni

Regular Member

Date Joined Sep 2004
Total Posts : 207
   Posted 8/4/2009 8:56 AM (GMT -7)   
I just had two preps in two days at the hospital last week (if that isn't cruel and unusual punishment, I don't know what is) -- one for a scope (OsmoPrep, the pills), and one for a SBFT (Mag Citrate -- I was so disappointed to hear that they make you do a prep for a SBFT now...that used to be my "favorite" GI test). I've also used the Fleet prep and NuLytely in the past. Of those four, I preferred the pill prep. By far. I only needed to take half the pills to run clear, and it seemed "gentler" than the Fleet or Citromax. NuLytely would come in second...it's a ton of fluid to drink, but it doesn't taste too horrid.

Looks like the OsmoPrep isn't long for the world, though -- I suppose they felt it was okay for me to use as I have good kidney function and was already in the hospital so they could keep a close eye on me.
Diagnosed with Crohn's in April 2003 (first symptoms in 2001).
Current Medications: Imuran 125mg/day, Humira, Pred 2.5mg/day, Cortifoam, Phenergan as needed for nausea (have previously taken Asacol, Entocort, Flagyl, and Cipro)
Dietary Supplements: Flax seed oil, Folic Acid, B12, Culturelle

Regular Member

Date Joined Jul 2007
Total Posts : 73
   Posted 8/4/2009 9:38 AM (GMT -7)   
I used LoSo prep once. My doctor's office gave it to me when I scheduled the test, so I'm not sure where you get it. It wasn't nearly as much liquid as other ones. Not bad.
Munchkin 81
27 year old female.  DX June 2007.
abscess Nov. 2006 - drain and surgery
Resection 11/07
Resection 4/08
on Remicade...off Remicade.  reaction during 4th infusion
on Humira

Veteran Member

Date Joined May 2009
Total Posts : 506
   Posted 8/4/2009 2:18 PM (GMT -7)   
I've only had GoLYTELY, and it wasn't too bad. I didn't eat for about 20 hours prior to my appointment so I didn't have to drink more than a few cups of it.
Diagnosed with CD July 2007.
July 2007
August 2007
December 2008
January 2009
July 2009

New Member

Date Joined Aug 2009
Total Posts : 2
   Posted 8/4/2009 8:51 PM (GMT -7)   
Well I go in for my first colonoscopy next Thursday Aug. 13th and have noticed a trend. I noticed that Miralax seems to be not to bad only one bad review on a seperate website and that if you eat lightly 2 days prior to prep you don't need to drink as much. I truly hate vomiting and do anything possible to aviod it. Just wondering if eating lightly 2 days before prep and maybe one meal the day before prep whould help keep me from vomiting using Miralax and Ducolax combo?
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