OXY-Powder? Are you sure this stuff works?

I've been on Oxypowder for 3 days now. And while I give it bonus points for solving a sluggish bowel problem, I can't say that I'm removing any MP or even old fecal material. Has anyone taken this product while fasting? I'm not having any of the expected side-effects. No gas, no cramping, no headaches, no nothing. Is this product not designed to get rid of MP?