It doesn't seem that there is too much out there as far as legitimate Isagenix complaints. There are a few floating around the Internet that accuse Isagenix reps of "poaching", (recruiting reps from other competing companies) but I find complaints like that somewhat irrelevant because you can't legitimately rate the policies or practices of a company simply because a few employees screw off, or do something to generate poor ratings. Employees do essentially represent their company, but companies can only be held accountable for the policies they are 'supposed' to uphold.
There are often many complaints like the following, and not just in regard to Isagenix, but similar companies;
"I informed my "Enrolling Sponsor" (the person who signed me up as an Associate/Salesperson with the company, which promised me a significant product discount for doing so) that both myself and my husband would like to TRY the products before being signed up for any autoship programs or selling any products, so we could evaluate our experiences with the products on our time. I am not the type of person to sell something I don't use and absolutely love.
My husband and I ordered two of Isagenix' 9-day cleansing programs, and upon trying them, I had a reaction to them (sinus congestion and digestive distress) due to the milk products used in their so-called cleansing formulas. I am very sensitive to milk and experience has told me that no cleansing program should ever feature milk as one of its components. My "Enrolling Sponsor" and other Associates told me this cleansing program was "different". It was not. As well, their cleansing products use fructose and some other sugars which most healthcare practitioners will tell you do NOT belong in any cleansing program whatsoever."
This is obviously someone who needs to read a label before digging into a beverage with a milk products in them, and I fail to see why someone wouldn't take the time to go over the ingredients before ingesting something like that. Here we have an individual complaining due to their own irresponsibility. My other issue with complaints like these is that they dictate what should and should not be in a cleansing product, but I was unaware that there was a standard. Some individuals may prefer milk or fructose in their cleansing products.This woman sounds more like she was expecting a detox product more than a colon cleanse.
Either way, as skeptical and somewhat cynical as I often am toward companies, Isagenix doesn't seem to have too many legitimate complaints following it around.