@deedeedavidson -
I am so sorry to hear about your experience. I am not a health care professional but have experienced difficult colonoscopy preps myself. I found this in the Sutabs package insert: "Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088." When I googled that number it indicated that it was for "Reporting by Health Professionals." You can ask your doctor if s/he reported your experience. Drug manufacturers analyze these reports to determine if any changes are necessary (e.g., product changes or labeling changes).

Here is a link to the FDA site for adverse side effects:
https://www.fda.gov/drugs/information-consumers-and-patients-drugs/finding-and-learning-about-side-effects-adverse-reactions#:~:text=Unwanted%20or%20Unexpected%20Drug%20Reactions&text=Side%20effects%2C%20also%20known%20as,heart%20attack%20or%20liver%20damage.
It is great that you actually read your report and now know more about your own anatomy! Knowledge allows you to be a better advocate for yourself.

I am always interested in learning about a drug that has been recommended by a health care professional before I take it. The best technique that works for me is to google "(drug name) package insert" and then I look for the link that includes "fda.gov" and follow that one. The package insert contains a lot of technical information, including dosage and administration (e.g., the Sutabs stated "Do not take other laxatives while taking SUTAB."), contraindications, as well as warning and precautions (e.g., the Sutabs stated "Osmotic laxative products may produce colonic mucosal aphthous ulcerations, and there have been reports of more serious cases of ischemic colitis requiring hospitalization. Concurrent use of stimulant laxatives and SUTAB may increase these risks").

I do hope you are doing well and feeling much better. Congratulations again for reading your colonoscopy report!
@annabelle