This information may be slightly different from the instructions given by the manufacturers of Klean-prep. This is because we want to ensure the best preparation for your procedure.
DO NOT FOLLOW THE MANUFACTURER’S INSTRUCTION ON HOW TO TAKE KLEAN PREP IN YOUR PACKAGE LEAFLET (STEP 3)
Preparing for your Procedure:
You have been prescribed Klean Prep as a laxative to empty your bowel in preparation for your colonoscopy. It is important you make all the preparations to ensure the bowel is clean before the examination so the endoscopist can examine it thoroughly.
- 7 days before, stop taking iron tablets, such as Ferrous Sulphate or Ferrous Fumarate.
- 5 days before, stop taking stool bulking agents, such as Fybogel or Laxido.
- 5 days before stop eating nuts, seeds and seeded breads. These can clog the colonoscopy equipment and the procedure may not be completed successfully.
- 3 days before, stop taking constipating agents, such as Loperamide or Codeine Phosphate.
- If you take blood-thinning medications, please inform the pre-assessment nursing team for advice.
Dietary advice in the days leading to the procedure
YOU MUST START YOUR LOW-RESIDUE DIET 5 DAYS BEFORE YOUR COLONOSCOPY
Try to drink two litres of clear fluids (8-10 glasses) per day until the day of your test. If you are a vegan/vegetarian, please swap suggested items with suitable alternatives.
| FOOD TYPE | FOODS ALLOWED | FOODS TO AVOID |
| Bread, cereals and grains | Refined breakfast cereals such as: Rice Krispies®, Coco Pops®, Weetos®, Frosties®, Cornflakes®, Sugar puffs®, Ready Brek®. Products made from white flour, for example white bread, white pasta, crumpets, English muffins, wraps, pitta bread, bagels. Well-cooked white rice, rice noodles, egg noodles, white noodles. Plain naan bread, plain chapatti, poppadoms. Rice pudding, semolina, tapioca, plain couscous, polenta. | Wholemeal cereals. Cereals containing nuts, seeds or dried fruit. Muesli, Fruit and Fibre®, Shredded Wheat®, Bran Flakes®, Crunchy Nut Cornflakes® . Any bread products or biscuits containing coarse grains, seeds or nuts or dried fruit such as multigrain bread, seeded batch, rye crispbread, rough oatcakes, hobnobs, muesli bars, flapjacks, teacakes, scones, fruit loaves. Brown rice, brown pasta, quinoa, pearl barley. |
| Meat, poultry and fish | Soft, tender, minced or pureed meat or poultry without visible fat and with skin removed such as poultry, lamb, beef, pork, veal and ham. Plain tofu, textured vegetable protein, seitan, Quorn®. All types of eggs. Fish without bones such as cod, salmon. | Tough, gristly meat or skin including pork scratchings. Fish with bones like sardines or with edible bones like whitebait. |
| Dairy products, fats and oils | Limit all types of milk including nut and plant-based milks to no more than half a cup a day. As an alternative to dairy, try soybean milk or soybean ice cream, for example Tofutti®). | Cheese containing dried fruit, onions or nuts. Yoghurts or fromage frais containing fruit pieces, dried fruit, nuts, seeds or cereal. |
| Vegetables | Well-cooked or pureed root vegetables such as carrots, parsnips, turnips or swede. Tomatoes without skins or seeds such as tomato juice, canned deseeded tomatoes, passata, tomato puree. Well-pureed hummus, lentil soup sieved to remove skins. Vegetable juices or soups – sieved to get rid of any seeds/skins. Avocado Mashed potatoes or wellcooked potatoes without skin, for example jacket potato, boiled potato, gnocchi. | All vegetable stalks, skins, seeds and peel. Sweet corn, broad beans, runner beans, mange tout, sugar snap peas, sweetcorn, spinach. Raw vegetables such as peppers, radishes and celery, tomatoes, cabbage, leeks, onions, lettuce, spinach and salad leaves. Firm beans and pulses with thick skins like kidney beans, baked beans, haricot beans, borlotti beans, soybeans, puy lentils, mushy peas or chickpeas. Potato skin. All curries made with legumes or pulses, such as lentils or beans. |
| Fruits | Fruit juice or smoothies (no seeds, pips, skins or piths). Cooked or stewed fruit without skin. Melon, banana. Canned pears, peaches or apricots. Canned citrus fruit with no pith, skin or pips, such as mandarins or grapefruit. Pureed fruit or fruit coulis (sieved). | All dried fruit. Any fruit skins, pips or seeds. Strawberries, raspberries, blueberries, blackcurrants, gooseberries, passion fruit, pineapple, kiwi, mango, apricots. |
| Desserts | Custard, ice cream, milk puddings. Clear jelly. Plain cakes Vermicelli (seviyan / plain kulfi). | Coloured jelly, for example red jelly. Ice cream containing fruit and nuts. Cakes, puddings and pies containing any of the following: wholemeal flour, dried fruit, nuts, dried coconut and any fruits you have been advised to avoid. |
| Drinks | Fruit and vegetables juices with no bits. Smoothies that have been sieved or have no seeds in. Water, soft drinks, weak tea and coffee, herbal te | Fruit and vegetable juices or smoothies with pulp and seeds. |
| Others | Clear or strained soups. Sugar, honey, golden and maple syrup, seedless jam, marmalade. Dark, milk and white chocolate, boiled sweets, marshmallows, toffee. | Chocolate with fruit or nuts. Nuts, seeds, coconut and desiccated coconut. Marmalade with peel, jam with seeds. |
Acceptable fluids include:
- Water / flavoured water
- Tea and coffee (no milk)
- Clear soup, for example, Consommé that contains no solids
- Fruit juice without pulp, for example, orange or lemon squash that is diluted (not red or purple in colour)
- Clear fizzy drinks, for example, lemonade, Lucozade, tonic water, cream soda, soda water
- Bovril/ Oxo
- Lime cordial
- Herbal teas (no milk)
- Clear apple juice or white grape juice
One day before your appointment
- At 7 am, eat a light low-fibre breakfast. No nuts and seeded breads.
- At 12 noon lunchtime: eat a light low-fibre lunch. No nuts and seeded breads. No more food.
- At 2pm, prepare 1st and 2nd (2 Sachets) in 2 litres water. Stir until the solution is clear.
- Try to drink between 250-500mls of prep every 15 minutes until you have drunk it all (over 3 hours). You should start to experience watery bowel movements.
- No milk should be consumed during your preparation
- ONLY CLEAR FLUIDS ALLOWED – SEE ABOVE PERMITTED FLUIDS
While taking any bowel preparation, we would encourage you to stay near a toilet. We recommend you use a barrier cream and wet wipes for your comfort.
What to Expect:
You will start to feel the effects within 2 hours after starting to take Klean-Prep. It is important you do not eat after the recommended time; however, PLEASE KEEP DRINKING CLEAR FLUIDS to prevent dehydration.
You may experience stomach cramps and diarrhoea during the preparation; this is normal. However, if you experience severe stomach pains or vomiting, take the preparation more slowly until these feelings stop. If the symptoms continue, seek medical advice from your GP or contact the Endoscopy Unit Reception on 0203 058 9083.
Whilst taking bowel preparation, stay near a toilet to prevent accidents. We strongly suggest you do not go to work when taking this laxative.
On the day of your colonoscopy
- At 7am, prepare 3rd and 4th (2 sachets) in 2 litres water. Stir until the solution is clear.
- Try to drink between 250-500mls of prep every 15 minutes until you have drunk it all (over 3 hours). You should start to experience watery bowel movements.
- No milk should be consumed during your preparation
- ONLY CLEAR FLUIDS ALLOWED – SEE ABOVE PERMITTED FLUIDS
After completing the bowel preparation, it is recommended you keep drinking clear fluids to prevent dehydration.
Remember, you can keep drinking clear fluid until two hours before your colonoscopy. Clear fluids are non-cloudy or transparent drinks such as water, herbal tea, black tea without milk, black coffee without milk, clear soup such as Bovril, diluted cordials (not blackcurrant), clear apple juice without pulp, etc. You can also suck clear-boiled sweets or mints.
Summary:
| 1st and 2nd sachets (2 Litres of Klean-Prep) one day before the procedure. | ||
| Stop eating but continue to drink clear fluids | 12 PM | |
| Try to drink the 2 Litres of Klean-Prep between 250-500 mls every 15 minutes (over 3 hours) | Start at 2pm and finish by 6pm | |
| Intended bedtime | 10 pm | |
| 3rd and 4th sachets (2 Litres of Klean-Prep) on the day of the procedure. | ||
| Try to drink the 2 Litres of Klean-Prep between 250-500 mls every 15 minutes (over 3 hours) | Start at 7 am and finish by 10am | |
If you have any questions or would like further advice, please contact the Endoscopy Reception:
- Monday to Friday 8am – 6pm
- 0203 058 9083 / 0203 058 9068
- or NHS 111 after 6pm