Aman Singh, MD, Gastroenterolgy for Women logo for print
11525 Olde Cabin Rd, St. Louis, MO 63141
Phone: (314) 997-0554

Aman Singh, MD Gastroenterologist

Preparation, Split Dose

We are looking forward to seeing you at our endoscopy center. This center is owned by the physicians of Specialists in Gastroenterology and we have a vested interest in its operation. It was designed to create the best experience possible for patients. We take every effort to make the process go as smoothly, safely and as efficiently as possible.

Colonoscopy Preparation Facts

A colonoscopy is a routine procedure performed to screen for colon cancer and to identify other diseases of the colon. The preparation for colonoscopy provides a clean view of the colon during colonoscopy. The preparation is not easy but is the most important part of the procedure and it depends on you. By following the directions exactly, the preparation gives the physician the best possible view to see subtle or flat polyps and to perform the procedure efficiently and safely. 

The laxative is one of the few FDA-approved colonoscopy preparations and does a great job of preparing the colon so that our doctors can confidently tell you what was and wasn’t found during your examination.

Split dose prep for colonoscopy

Split dosing is important because it increases the likelihood that the colon will be adequately prepped to discover small polyps and flat polyps.

It also decreases the likelihood that the procedure will need to be cancelled and rescheduled because of a poor cleansing. The colon preparation is an important and difficult job to do. We know it is inconvenient and will lead to poor sleep but you will have the rest of the day of your procedure to take naps and the colonoscopy will be maximized for your best health.

Frequently Asked Questions & Answers

How much does the prescription cost?

This amount will depend on your insurance coverage and may range anywhere from $15-$75. We will enclose discount coupons whenever possible. The preparation was design to ensure that your colon is completely clean so your doctor can be certain he/she has performed the best colon cancer screening possible.

What if I don’t like the taste?
The instructions you received contain the results of several taste tests that determined the best way to flavor the laxative. If you don’t care for lemon or lime, you may also use tea bags or iced tea to improve the flavor. Drinking the solution through a straw may help to try to “bypass” your taste buds. The laxative has been sweetened with NutraSweet so do not add sugar unless necessary. Sucking on a lemon drop or hard candy after each glass can be helpful, as well.

I have diarrhea; do I need to drink the entire laxative amount?

Even though you think your colon is clean, it is best to be sure by taking the preparation as prescribed.

I don’t weigh much. Do I need to drink the entire amount?

Yes. All colon lengths are the same, no matter how much you weigh.

I feel nauseous, or feel too full to drink the rest of the laxative.

Your prescription included 2 capsules to be used to relieve nausea. Use them as directed in your instruction sheet. If you are too full to continue drinking, take a break until you feel less full and then resume drinking.

My bowels haven’t moved yet after drinking the laxative.

People typically experience a bowel movement within a couple hours of starting the prep, but this varies from person to person. If you tend to have constipation it will take longer. If you have experienced no effects after several hours, you should consult your physician.

I’m afraid to take the second dose of laxative before I leave home for a morning procedure.

The second dose of the preparation does not have the purgative effect as the first dose. The reason to take the second dose of the preparation as close as possible to the procedure time is to cleanse the right colon where flat polyps are seen. Studies have shown that only 10% of patients will need to stop at a restroom during their trip to their procedure.

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