What causes Melanosis Coli if you are not using laxatives?

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I was told by my gastrologist that it is caused by herbal supplements and drinks. Which include colon cleansers, diet supplements, and herbal drinks. I was told to never use anything herbal again and it should correct it self in 5 years.

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First answer by ID3326232580. Last edit by ID3326232580. Question popularity: 18 [recommend question].