its bullshit but you can see where they might be coming from..... technically vitamin c is the same thing as "no explode" and "acai juice", that is, as far as the fda categorizing system of drugs.. and the fda doesnt regulate study or oversee anyof these "supplements"... so when they are approving a higher scheduled drug for approval, how can they approve it when there is component of that drug that they dont have any oficial tests or studies on..
although im speculating that the fda doesnt have studies on vitamin c... they possibly could, ive been wrong before befor.e