I'll tell you something, I've taken just about every kind of clen there is and oxyflux is actually a decent product. Here's what USED to happen - when oxyflux first came out, the lab sometimes under dosed and even actually sometimes over dosed the tabs, becuase of the large volume of business they've done, their products have improved dramatically. If you can get any clen from over seas then do so, but I don't care what anyone says oxyflux is a pretty good product. Peace out and good luck!