If you’re asking whether it’s possible to “clean 15 kilograms of waste from your colon in one night,” that claim is misleading.
There is no good medical evidence that an average person has 15 kg of accumulated waste sitting in the colon, or that a home “colon cleanse” is needed to remove it. Your digestive system continually moves stool through the bowel, and routine detox/colon cleansing isn’t recommended for general health.
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Mayo Clinic
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What actually helps constipation
Increase dietary fiber gradually through vegetables, fruit, legumes, oats and whole grains.
Drink adequate fluids throughout the day.
Stay physically active, such as taking regular walks.
If these aren’t enough, a healthcare professional can recommend an appropriate laxative. Some, such as polyethylene glycol, work by drawing water into the stool.
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Mayo Clinic
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What about an overnight bowel cleanse?
Strong laxatives or enemas can produce substantial diarrhea, but they’re generally used for specific medical purposes—most notably bowel preparation before a colonoscopy—rather than for routine “detoxing.” Improper cleansing can cause dehydration, electrolyte disturbances, cramping, bleeding, infection, and, rarely, bowel perforation.
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Mayo Clinic
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If you’re severely constipated, don’t attempt an aggressive cleanse if you have severe/constant abdominal pain, vomiting, blood in the stool, fever, or inability to pass gas; these can require prompt medical evaluation.
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NIDDK
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