Preparation for intestinal colonoscopy with Fortrans

Two-stage preparation scheme

We invite you to familiarize yourself with the two-step preparation scheme for colonoscopy using the drug Fortrans. Preparation is preferable as it provides better quality of preparation and is easier to tolerate by the patient.

It is recommended when conducting the study at lunchtime after 11:00.

  1. 3 days before the test, follow a slag-free diet.
  2. 1 day before the test, before 15:00, take only liquids and do not eat solid food.

Stage 1 of taking Fortrans (1 day before the study):

  • 18:00-19:00 - take 1 liter of Fortrans (1 glass every 15 minutes).
  • 19:00-20:00 - take another 1 liter of the drug (1 glass every 15 minutes).

Stage 2 of taking Fortrans (on the day of the study):

If the examination is carried out without anesthesia (sedation), you can drink tea with honey or still water. If the test is carried out using painkillers, you must be on an empty stomach.

  • 5:30-6:30 - take 1 liter of Fortrans (1 glass every 15 minutes).
  • 6:30-7:30 - take 1 liter of Fortrans (1 glass every 15 minutes).

November 15, 2021 Virtual colonoscopy is performed only after proper bowel cleansing. Such cleansing involves either cleansing alternating enemas the day before and on the day of the study, or the use of special pharmaceuticals, for example, Fortrans or Dufalak.

It is recommended to follow a diet two to three days before the procedure. To do this, you need to remove gas-forming foods and any solid foods from your diet. In general, the patient is recommended to consume exclusively liquid foods (tea, juices and compotes). When interviewed by a doctor, the patient must indicate a history of chronic diseases. Of particular importance is the pathology of the heart, kidneys, and liver. This should be warned before starting bowel preparation.

How is the research conducted?

As mentioned above, the method is based on X-rays.
The tissues of the human body pass them through themselves in different ways, which has long been used in medicine (X-rays). The denser the tissue, the less rays it transmits and the lighter it looks in photographs (bone), soft tissues such as muscle are gray, and lungs filled with air are black. When performing a tomographic colonoscopy, the device rotates around the patient, taking serial images from different angles. The rays passing through the human body are recorded by sensors and entered into a computer for processing. So one revolution around the body is called a “cut”. As a result, the photographs show a layer-by-layer pattern of the human body. The procedure itself takes little time, which mainly depends on how modern the device is used in clinics. For example, there are tomographs not with single, but with multiple sensors (about 40), which significantly increases the scanning speed. CT colonoscopy allows a computer to generate a 3D image of the colon cavity, and the specialist can change it, as if moving along the entire length of the large intestine.

Stages of the procedure.

The patient is asked to lie on his stomach.
A thin tube is inserted into the rectum, through which air is pumped. After this, the table on which the patient lies moves inside the scanner, where pictures are taken. Usually after this the patient is asked to turn on his back, and a number of more shots are taken. The whole process will take no more than 15 minutes. The procedure is absolutely painless, minimal discomfort is caused by the intestines distended with air. Next, the doctor describes the images; this takes no more than 30 minutes.

If the specialist detects some changes, the patient may be immediately referred for an endoscopic examination (polyps, tumor).

All information about the condition of the intestinal tube is saved on a digital medium, which is convenient when visiting the doctor again. Virtual colonoscopy (computed tomography of the intestine, CT colonography) is a new method of examining the colon, which allows one to assess the condition of the colon, abdominal organs and pelvis in one study.

Preparation for the procedure:



— 3 days before the test, exclude foods rich in fiber: vegetables and fruits in any form, grain and rye bread, cereals, legumes, cereals, sesame seeds, nuts, seeds and other small grains, seaweed, mushrooms.

- You can - eggs, cheese, milk and dairy products, meat, chicken, fish, a small amount of mashed potatoes and pasta.

— On the day of preparation for the study (i.e. on the eve of the study day): it is recommended to completely exclude food intake; before 16:00 you can drink 2-2.5 liters of clear liquid without pulp (clarified broth, sweet tea, clear juices without pulp and etc.).

— In the morning of the test day, do not eat, drink, or smoke.


  • Regimen for taking Fortrans if the test is in the morning:

The day before, from 16.00, you need to take 4 liters of solution (4 sachets of Fortrans) within 4 hours. Dissolve each sachet of the drug in 1 liter of drinking water. Take 1 liter of solution per 1 hour (i.e. 1 glass per 15 minutes) in small sips (not in one gulp!). At the very beginning of taking the drug solution or when taking it quickly in large quantities, nausea may occur. If it is difficult to take a solution of the drug due to its taste, you can add freshly squeezed lemon or other citrus juice to the solution, drink a small amount of sweet tea in between, and also suck barberry lollipops, honey, etc.

The test is scheduled until 12:00.

  • Regimen for taking Fortrans if the study is during lunch:

on the eve of the study from 18:00 to 20:00, drink 2 liters of the drug, on the day of the study from 6:00 to 8:00, drink another 2 liters of the drug. Taking Fortrans should be completed at least 4 hours before the start of the study.

The test is scheduled after 12:00.

While taking Fortrans, it is recommended to move (walk, perform circular movements with the body, self-massage of the abdomen, etc.). At the end of taking the drug, the stool should change to a clear, colorless liquid. Defoamer ESPUMIZAN (emulsion!): with the last portion of Fortrans (in the last glass of Fortrans) in the evening and morning of the test day, take 4 scoops of Espumisan emulsion.

On the day after the study, if abdominal bloating persists, continue taking Espumisan 2 scoops up to 3 times a day. For chronic constipation - LAXATIVES of non-herbal origin - a week before the study (gutalax, dulcolax, laxylene, etc.).

Taking medications that normalize blood pressure, rhythm, etc. is mandatory in a standard manner! Antispasmodics: Buscopan 10 mg immediately before the study sublingually. Or Dicetel 50 mg, 1 tablet. x 3 times a day on the eve of the study, 1 tablet. 12 hours before the study.

Take with you: results of previous studies, a sheet.

How is CT colonography performed?

A CT scan of the intestine is performed after air is introduced through the patient's rectum, with the patient lying on his back and on his stomach.
The total duration of the study is 15-20 minutes. The procedure is well tolerated by patients; minimal discomfort in the form of a feeling of bloating is possible. After the examination, the radiologist, using special computer software, processes the data obtained, including obtaining three-dimensional images of the lumen of the colon (so-called virtual colonoscopy).

Radiation diagnostics department (MRI, CT, X-ray)
Registration for computed tomography of the intestine from Mon-Fri by phone: (3452) 29-41-43

One-stage preparation scheme

It is recommended when conducting the study in the morning before 11:00.

  1. 3 and 2 days before the test, follow a slag-free diet.
  2. 1 day before the test, before 13:00, take only liquids and do not eat solid food.

From 16:00 to 20:00 - take 1 liter of Fortrans (for 4 hours, 1 glass every 15 minutes).

On the day of the examination, during the procedure without painkillers, you can drink tea with honey or still water. When performing the procedure under sedation (with pain medication), you must avoid eating and be on an empty stomach.

The indicated administration time can be changed, but it is important to remember that it is recommended to finish taking the last dose of Fortrans 3-4 hours before the start of the study.

Fortrans or Lavacol

Before the examination, any person has a choice of medication. But it is difficult to decide which one to use, especially when the course of the procedure depends on the effectiveness of the product.

Each patient is informed that if the intestine is perfectly clean, then the examination is faster, allows the doctor to carefully examine the internal walls, take pieces of tissue for analysis, and therefore does not have to repeat this unpleasant procedure to clarify the diagnosis.

Usually choose from two drugs: Fortrans and Lavacol. They have a lot in common:

  • macrogoal in the composition;
  • Available in powder form;
  • have a laxative effect;
  • are not absorbed into the walls of the gastrointestinal tract.

There are also differences:

  • price (Russian medicine is three times cheaper than French medicine);
  • taste.

Lavacol is easier to drink due to its milder and less unpleasant taste, and is less likely to cause vomiting and bloating.

The scheme for using this remedy is simple:

  1. one sachet of powder is designed for 4 kg of weight, and it is diluted in 200 ml of water;
  2. They begin to drink the resulting liquid in the afternoon on the eve of the morning examination, so that 20 hours pass between taking the first portion and before the start of the colonoscopy.

In total, it will take five hours to use the product, and another three to completely empty it. You should drink the liquid in small sips, taking a fifteen-minute break after taking 200 ml.

Slag-free diet

YOU CAN take refined foods and easily digestible foods:

  • Boiled meat (low-fat varieties), fish, chicken
  • Bouillon
  • Low-fat fermented milk products without fruit additives
  • Boiled eggs
  • Omelette
  • Honey
  • Jelly
  • Not strong tea or coffee, clear juices without pulp
  • Not sparkling water

DO NOT eat foods rich in fiber and poorly digestible foods:

  • Grain products, cereals
  • Fruits, vegetables, berries, greens
  • Cereals, legumes, nuts
  • Fatty meats, fish, poultry, mushrooms
  • Cream soups, smoked meats, canned food, sausages
  • Full fat dairy products
  • Bread, sweets
  • Alcohol and carbonated drinks

Recommendations for taking Fortrans

  1. The solution is prepared at the rate of 1 sachet of Fortrans per 1 liter of water. For quality preparation, it is recommended to take 4 liters of solution. Do not reduce the amount of liquid!
  2. To improve the taste, you can add citrus juice without pulp to the solution and drink it chilled.
  3. Drink the solution gradually over an hour - 1 glass every 15 minutes in separate sips.
  4. Approximately 1 hour after starting to take the Fortrans solution, painless, loose stools will appear.
  5. Bowel movement will end with the release of clear or slightly colored liquid 2-3 hours after taking the last dose of Fortrans.
  6. During the reception, it is recommended to walk, perform circular movements of the body and light massage of the anterior abdominal wall.
  7. The drug must be taken 3-4 hours before the start of the study.
  8. If you are prone to constipation, it is recommended to start taking laxatives (for example, Forlax) at least 1 week before the test.

Preparation instructions

Side effect

In some patients, even with strict adherence to the instructions, the medicine causes undesirable symptoms after taking it:

  1. discomfort in the abdomen caused by a large amount of fluid in the abdominal area;
  2. nausea and vomiting due to a specific unpleasant taste;
  3. headache;
  4. very rarely rash, urticaria, swelling;
  5. pain and irritation in the anal area due to bowel movements.

To alleviate these conditions, it is recommended:

  • take short breaks between doses of the solution;
  • drink 5 ml of lemon juice after each serving;
  • replace toilet paper with water dousing.

The headache and feeling of fullness disappear after finishing taking Fortrans.

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