Well we certainly have the GNC equivalent over here -- each state has its licensing board, now euphemistically referred to as "Quality Assurance Committee". In truth, it is a most undemocratic bureaucracy, with a committee made up of a few docs and a group of lawyers, regulators, non-physician practitioners and "community representatives" (i.e. activists). All power to the complainant, and the doc is largely assumed guilty until proven innocent, after a press release.
I don't disagree with your sentiments about the GNC. Same thing here.
That said, it's unfortunate that discussing any medical topic outside a formal doctor-patient encounter is now considered rendering inappropriate medical advice. Whereas one can spout whatever dangerous advice one wishes so long as you are not medically qualified. This is supposed to be beneficial to patients.