Dietary supplements
Dietary supplements
Federal legislation passed in 1994 severely limits the FDA from regulating the safety and efficacy of supplements that land on store shelves.

Dietary Supplement Act of 1994 - Dietary supplements are considered foods, not drugs

Harriet Hall - Skepdoc, AARP on dietary supplements

A cleansed and revitalized body is stronger, resists illness better, is more efficient and performs at a higher level than one that is filled with impurities. Many people notice an ability to reach and maintain their ideal weight.
Harriet Hall's critique of Isagenix - more
I couldn't find a critique of Isagenix on the Web, but that's not surprising. No serious medical scientist would take it seriously enough to bother about it. And it's basically all been done before; it's just a slightly new wrinkle on an old scam.