<<I had read in one of the vitamin books (old one) that  1. the body does not 
process more than 500 mg of VitC per half hour and 2. that more than 3,000 mg 
per day will cause harm to the stomach.  ?????>>



     Vit C doses can go as high as 12,000 mg a day regularly with it actually 
going much higher for some therapeutic applications.

  Because Vit C is water soluble does not mean that what is not absorbed in the 
first half hour is eliminated.   About 15% of the population will experience 
stomach blaoting or cramps with Vit C.  Using an mineral ascorbate with calcium 
or magnesium will eliminate this problem as will using Ester-C.

    Most accepted today is using Vit C at higher dose to bowel tolerance.  This 
differs person to person.  The very high doses would be used only in acute or 
some chronic illnesses.

Regards,
Catherine