I don't know why my name didn't show up. And regarding your comment, I actually tried to go back in and ad a comment that I'm just some guy with no credentials and that no one should take my word on anything except when I relay my own experiences. I've taken up to 30,000 mg or more simply 30 grams of MSM a day and have noticed absolutely nothing except my knees weren't as sore after playing tennis. Certainly with this type of thing you should work up to levels gradually. It sounds like you have some kind of ulcerous situation with your colon.