Preparing for a Clear and Effective Colonoscopy

White bread and rice

Eat refined grains such as white toast, white rice and plain pasta in lieu of wholegrain during the low-fibre phase.

Dairy choices

Plain yoghurt, cheese and milk may fit the low-fibre phase if tolerated and permitted by your clinic’s instructions.

Lean proteins

Eggs, fish, chicken and tender meat can provide satisfying meals while keeping fibre intake lower before the procedure.

Fruit and vegetables

Follow your clinic’s approved list; peeled, well-cooked options may be allowed before the clear-fluid stage begins.

Wholegrains

Do not consume brown rice, wholemeal bread, bran cereals and wholegrain pasta when your instructions begin restricting fibre.

Skins and peels

Avoid fruit or vegetable skins, tough stalks and fibrous pieces during the low-fibre period advised by your clinic.

Nuts and seeds

Skip nuts, seeds, popcorn and foods containing them, as small pieces can remain in the bowel and affect visibility.

High-fibre produce

Do not consume raw vegetables, berries, dried fruit, legumes and other foods that leave more residue in the bowel.

Water

Drink water regularly during the preparation period, following your clinic’s guidance on when to stop fluids before the procedure.

Broth

Clear, strained broth can provide variety and some salt, but stay away from soups with noodles, vegetables, cream or solid pieces.

Clear juice

Pulp-free apple juice or other approved clear juices may be allowed; check the clinic list and avoid prohibited colours.

Tea or coffee

 Black tea and coffee may be allowed in the clear-fluid phase, but milk, cream and non-dairy whiteners make them non-clear.

Red or purple drinks

 Avoid strongly coloured liquids and jelly, as their colour may resemble blood or interfere with interpretation.

Alcohol

Do not drink alcohol during bowel preparation; it can worsen dehydration and may conflict with medicines or sedation advice.

Milk-based drinks

 Do not consume milk, smoothies, protein shakes and opaque beverages once your plan switches to clear fluids only.

Pulp and solids

Avoid juice with pulp, soups with pieces, and any solid food after the time your preparation instructions specify.

Follow the written plan

Diet timing varies by clinic and prep product, so use your own instructions rather than a generic online schedule.

Discuss health conditions

 Kidney or heart disease, pregnancy, frailty or previous poor preparation may require an individualised plan.

Check medicines

Ask the treating team about diabetes medicines, blood thinners, iron, constipation treatments and other prescriptions.

Seek help early

Contact your clinic if you vomit, cannot finish the preparation, feel faint or are unsure whether the bowel is clear.