I call Vitamin C the "Miracle" Vitamin. A household should not be without it. It comes in all forms and can be used for all ages. Click on the links below for articles and information written by the first physician to aggressivley use vitamin C to cure diseases. In the bottom link you will read studies done and dosages by Dr. Klenner.
http://www.doctoryourself.com/vitaminc.html - Article
http://www.seanet.com/~alexs/ascorbate/198x/smith-lh-clinical_guide_1988.htm - Clinical Guide to the use of vitamin C