There is so much conflicting content debating vitamin C and it's effectiveness as an immune system supporting agent. I've advocated mega dosing in the past with vitamin C at a gram per hour while sick and otherwise using it daily to boost immune fuction. After further research I'm at a stand still to tell you the truth. There is no one on this board with enough knowledge in my opinion to really give full knowledge of vitamins and minerals in terms of their dosages, conflictions, sources, etc. There used to be a member back in the day 3 years ago on BB.com (ironically enough) who dedicated most of his time to vitamin and mineral research. His results and dosing schedule (from various sources) was rather unreasonable for the average individual, although, his reasoning was based on an ungodly amount of research. Back to vitamin C....which, is the point I am headed towards, is become a synonym for ascorbic acid. If you do some searching, ascorbic acid is far from being considered vitamin C. It is produced synthetically in a lab and is just one part of the actually vitamin. To date, as I understand it, there is nothing produced in a lab that fully can be accepted as vitamin C. The only pure source is from natural products, fruits, vegetables etc. This whole idea throws a hitch in the entire megadosing principle. Like I said above, I honestly don't know where I stand right now which varying sources of info. I've had results megadosing to combat illness and for use of immune system support. Whether or not the results are coincidence is another issue. I suppose the bottom line is that your usage of ascorbic acid isn't going to hurt you and if it does produce results whether physically or pyschologically is irrelevant.