there've been lots of threads on curezone about Oxypowder vs colonix/jim foley's colon pills. they work in different ways. i've found Oxypowder to be a minus for my body, whereas foley's (which i take every day) is a real plus. i get dark stuff out almost every day, and the dark stuff is the mucous lining of the digestive track, which shouldn't actually be there. Oxypowder didn't get that false, junk lining out of my colon.
if you read the bowel forum, you'll find lots of stuff on this...