Your Colorectal Health, Our Priority
With our comprehensive suite of screening services and treatment options, our experienced colorectal specialist and medical team promise you peace of mind whilst ensuring a strong and healthy colon.


Dr Ho Kok Sun
Consultant Colorectal & General Surgeon
A colonoscopy is one of the most effective procedures for detecting colorectal cancer, identifying polyps, and evaluating various digestive symptoms. However, the success of the examination depends largely on proper preparation, as a clean colon allows the doctor to obtain clear and accurate results.
Understanding what to expect before, during, and after the preparation process can help reduce anxiety and ensure a smoother experience.
The first step in preparing for a colonoscopy is scheduling a consultation with your healthcare provider. This visit helps confirm the right timing for the procedure, review your medical history, and address any medication or health concerns before preparation begins.
As your colonoscopy appointment approaches, following your doctor's preparation instructions becomes increasingly important. The days leading up to the procedure typically involve dietary adjustments, bowel preparation, and medication management to ensure the colon is clear for examination.
By the day of your colonoscopy, most of the preparation is complete. Following your healthcare provider's final instructions and arriving prepared can help ensure a smooth procedure and recovery.

Preparing for a colonoscopy can feel daunting, especially if it is your first time undergoing the procedure. At Ho Kok Sun Colorectal, patients receive clear, personalised guidance on dietary changes, bowel preparation, medication instructions, and what to expect on the day of the procedure.
Led by Dr Ho Kok Sun, our team is committed to providing evidence-based colorectal care tailored to each patient's health needs. If you are due for a colonoscopy or have concerns about the preparation process, contact us today to book an appointment.
If you accidentally consume a food that is not permitted during the preparation period, contact your healthcare provider as soon as possible. Depending on the type and amount consumed, your doctor may recommend additional preparation steps or determine whether the procedure needs to be rescheduled.
The goal of bowel preparation is to clear the colon of stool. In most cases, bowel movements should become watery and appear pale yellow or clear by the end of the preparation process. If you are unsure whether your bowel prep was successful, consult your healthcare provider before the procedure.
Light physical activity is generally acceptable during the preparation period. However, because dietary restrictions and bowel-cleansing medications can increase the risk of dehydration, it is advisable to avoid strenuous exercise and ensure adequate fluid intake as directed by your healthcare provider.
Dr Ho Kok Sun
Consultant Colorectal & General Surgeon
MBBS (Singapore), M Med (General Surgery) (Singapore)
FRCS (General Surgery) (Edinburgh), FAM (Singapore)
Dr Ho Kok Sun has been committed to treating colorectal cancer through minimally invasive surgical techniques for over two decades. Dr Ho was previously President of the ASEAN Society of Colorectal Surgeons and the Society of Colorectal Surgeons (Singapore), as well as a founding member of the Eurasian Colorectal Technologies Association. Dr Ho was actively involved in the training of medical students and residents and has published widely in reputable journals and book chapters. He believes that treatment should always be personalised to the patient’s needs.