Diet guidance
Fasting guide for flexible sigmoidoscopy
Easy-to-read guides for each phase of your preparation diet. Choose the section that matches where you are in your prep.
At a glance
Your day-of instructions cover fasting, medications and arrival.
Which sections apply to you?
Tick the parts of this guide that match your prep plan. If you are being tested for Coeliac disease, we will show extra gluten advice on each page.
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Follow your doctor's orders first
These guides are based on standard flexible sigmoidoscopy prep diets. Your gastroenterologist may tailor instructions based on your health, medications, or the time of your procedure. If their instructions differ from what's here, follow theirs.