a practical consideration?

not to be too base, but - after reading about some of the results that might be expected with the bowel cleanse,,if it's 'working' as well as one could wish... have any of you with experience of such 'sucesses' had problems with your toilets 'flushing capacity', sounds slightly silly, but, i live in a house with older, and apparently narrower pipes and am currently ready to begin a bowel cleanse. I just thought i might need to look at this issue, before it's a problem.
Any experiences, etc. appreciated. Thanks