Max LMG from ALRI:

Over that last few years the supplement industry has created many new effective performance-enhancing products. The most notable being the now illegal prohormones and prosteroids because, simply stated: They built a lot of muscle for a lot of people.Some of these products were so anabolic that many felt that the need to legally reclassify them as illegal and controlled substances under the new Anabolic Steroid Control Act of 2004. (And they did reclassify all known compounds at that time). Prior to that, innovative companies were able to use references to "anabolic and androgenic ratio" as well as compare the effects to "known controlled anabolic/androgenic steroids". With the enactment of the new laws, companies lost the ability to refer to substances in this manner any longer as the reference in itself validates the addition of the substance to the anabolic list and making it too illegal in as little as 2 weeks. In short, great products were lost again.

"The Anabolic Steroid Control Act of 2004 was signed into law by President George W. Bush on October 22, 2004. A new law closed the so-called legal loophole that allowed the sale in dietary supplements of steroid chemicals used as anabolic hormones or their precursors."

The Anabolic Steroid Control Act now states, in part...
"(A) The term 'anabolic steroid' means any drug or hormonal substance, chemically and pharmacologically related to testosterone (other than estrogens, progestins, corticosteroids, and dehydroepiandrosterone), and includes... (Pretty much everything we now miss)

So, any claim of a supplement providing an anabolic effect, or even a relationship to (or comparison to) a known controlled hormone or substance, means that the product is not going to be around for very long before it is included within the Anabolic Steroid Act. For that matter, voluntarily pulled from the market to avoid chancing more negative media upon our industry. Hmmm, okay... okay, fair enough.