My wife has these regularly. She and others we know claim the prepping is worse than the proceedure. We also know a medical rep. who sells the supplies. His advice to make it easier: ask for the "low sodium" prep kit. Rather than drinking a gallon of vile stuff you take a pill and/or a smaller volume of liquid. Also you must start weaning off solid foods 2 days early rather than just 12 hours, but the process is more gentle and easier to "swallow".

The CT colonoscopy still requires a tube to "inflate" your colon with CO2 and a similar prep regime, it requires radiation exposure, and if they find anything you still need to get a regular colonscopy to remove polyps. The CT version can't see flat lesions - only 3D-polyps, and only those above a certain size, although the newset CTs can find the same percentage of polys of "clinical significance" as a visual scope (which does miss a few at corners for example). So CTs are not really an advantage.

The camera that you swallow does not get 100% coverage on the way through, and it can't take samples or remove polyps. It also has limited resolution, but the technology keeps getting better. At the moment it is not considered a replacment for a colonoscopy if you are hunting for colon cancer or pre-cancerous conditions.

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