Proper preparation is the single biggest factor in a successful, accurate colonoscopy. Follow this guide closely, and call us with any questions along the way.
3 Days Before
- Avoid seeds, nuts, and whole grains
- Stop iron supplements if instructed
- Confirm your ride home is arranged
1 Day Before
- Switch to a clear-liquid diet only
- Begin your prescribed bowel prep solution as directed
- Stay near a bathroom once the prep begins working
Day of Your Procedure
- Complete the second dose of prep as instructed
- Do not eat or drink anything after the cutoff time given
- Arrive on time with your ride arranged
Most important: Following the prep instructions closely is the single biggest factor in getting an accurate, complete exam.
Frequently Asked Questions
Water, clear broth, plain tea or coffee (no milk), clear juices like apple or white grape, and clear sports drinks. Avoid anything red or purple.
Call our office — an incomplete prep can affect exam accuracy.
Most medications can be taken with a small sip of water, but blood thinners and certain diabetes medications need specific instructions.
Reviewed by Dr. Anthony Marchetti, MDThis content is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.