I'm not sure . . . I have been using an herbal supplement every day for about a year now. It relieves my constipation so I guess you would call it a "laxative"? If I don't take it, I will not have a bowel movemnet for up to 6 months! And end up in the Emergency Room due to SEVERE pain.
Do you think this is the cause of the black intestines? Why do they turn black? Should I quit using the herbal supplements?
I unserstand my doctor should be able to answer these questions for me . . . but if he did, then I wouldn't be on here . . .