From what I understand, the gist of it is to make many dietary supplements (even things like fish oil and vitamins) available by prescription only, hence only pharmaceutical companies can make them. Herbs and nutrients (like co-enzyme Q10) will have to be tested, etc (again, who can afford to do all this testing - big pharma). This subject comes up about every 7 - 10 years.
There's rumors that the FDA may try to do this same thing with handmade soaps, creams, salves, etc. Not cool.