No one who has active IBD needs any help "cleansing."
OTOH, "healthy" people with poor diets who are chronically constipated might benefit from a gentle cleansing regimen. From what I've read, it's the extreme colonic irrigations that have the most risk for screwing up bowel ecology.
Diagnosed with ulcerative colitis spring 1999.
Maintenance dose sulfasalazine.
Probiotics, l-glutamine and fish oil caps. George's aloe vera juice. Oregano oil antibiotic, antiviral, antifungal. Long-term remission with only minor blips.