21.04.2026

What should not be eaten before a colonoscopy?

Proper preparation is essential to ensure the examination is performed correctly.

Diet has a significant impact. For 4 days before the planned colonoscopy, you should avoid:

• dark bread and bread with seeds

• fruits with small seeds (e.g., grapes, raspberries, strawberries, tomatoes, kiwi)

• flaxseed, poppy seeds, sesame seeds, sunflower seeds

• beetroot

• fatty meats and processed meats (cold cuts)

• peas and beans

• all kinds of groats (e.g., buckwheat, barley)

Avoid foods that are difficult to digest, as they may lead to inadequate bowel cleansing.

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