The acting director of the Compliance Branch of the FDA told the USA Alliance for Natural Health that any other company unable to show an exemption or prove that it has taken IV C through the drug approval protocols would be subject to a similar order to cease production and distribution.
There have been numerous studies showing the efficacy of intravenous vitamin C against some chronic complex diseases, viruses, and cancers, and can be used for bacterial infections such as staph, strep, and skin infections--including drug-resistant bacteria. It is being used in burn units around the world.
The FDA appears to be gearing up to target other nutrients also. Here is the list: various formulations of injectable vitamin C, magnesium chloride, and B complex. These are commonly used by alternative physicians for their patients.
You can find details on this at http://www.anh-usa.org/an-important-update-on-iv-vitamin-c/
You can also make a complaint to the FDA at https://secure3.convio.net/aahf/site/Advocacy?cmd=display&page=UserAction&id=648