This is quite shocking and yet interesting to read! Even since having IBS and after going to a Chninese medical centre and taking the medication for two weeks during Decemember my stools were completly black! I could only afford the herbal treatments for those two weeks, have been using aloe vera even since after that. Still, to this day, most of my bm's produce black stools. Yet, I'm not cleansing at all. In fact, I've only just ordered the colonix internal cleanse and, likely I'll have to wait a good week or two before I can start the cleanse.