Intravenous vitamin C is a very powerful treatment. It is used to successfully treat viral infections (esp hepatitis) and many many many other conditions. It would be a great loss of the pharm biz succeeds in driving this through.

You can get more info and send a message to the FDA through this page:
http://www.anh-usa.org/action-alert-now-the-fda-is-going-after-vitamin-c/