Recommended Daily Allowance for Vitamin C
RDA: 3000 mg Vitamin C
1000 mg three times per day
We recommend more vitamin C during pregnancy (6000 mg), and much more while under stress or fighting infectious diseases (e.g., 20,000 to 300,000 mg).
|60-95 mg||U.S. Recommended Intake|
|200 mg||Levin/NIH Recommendation|
|400 mg (recently increased)||Current Linus Pauling Institute Recommendation|
|2,500 mg||Hickey/Roberts minimum|
|3,000 mg||Foundation's daily recommendation (up to 250,000+ mg)|
|6,000-12,000 mg||Thomas Levy's daily recommendation|
|6,000-18,000 mg||Linus Pauling's daily recommendation|
|20,000-300,000 mg||Cathcart/Levy Cure for Infectious Diseases|
|10,000-130,000 mg||Russel Jaffe calibration|
|1,000-10,000 mg||Children (Klenner recommendation 1 g/year)|
|6,000-18,000 mg||Heart Disease|
|14,000-30,000 mg oral (200,000 IV)||Cancer|
Our recommendation is more than 30 times what the United States Government's National Academy of Sciences recommends (75-90 mg), and 15 times more than what the Linus Pauling Institute and the Levin group at the National Institutes of Health recommend (200 mg).
Linus Pauling recommended 2 to 6 times the Foundation's vitamin C RDA (6000 to 18,000 mg vitamin C). Pauling wrote that his recommendation was based on the large amounts of vitamin C animals make for themselves, and on the amount humans must ingest orally to achieve similar levels.
Vitamin C author/expert Thomas E. Levy, MD, JD, recommends from 2 to 4 times our recommendation (6,000 to 12,000 mg daily)
Our recommendations are partly based on the work of Dr. Robert Cathcart, III. Cathcart determined that the ability to tolerate oral intakes of the vitamin vary between 4 and 16 g daily during ordinary poor health. Cathcart's clinical experience demonstrates that virtually every human being will tolerate 4 g vitamin C daily.
The Foundation recommends 1 g vitamin C for children based on their age, up to the age of 3. One gram for one-year-olds, two grams for two-year-olds, etc.
Our recommended daily allowance may not prevent or resolve diseases related to lack of vitamin C. For example, we believe that heart disease requires from 6000 to 18,000 mg vitamin C, and that cancer may require 14,000 to 30,000 mg daily.
We do realize that if our recommendation were adopted by most people in the
world, there would be a grave shortage of the vitamin. (Perhaps this is one
reason that Government recommendations are so tiny?)
Owen R. Fonorow
Foundation Does Not Sell Vitamin C
Vitamin C Information
Approved Vitamin C
Vitamin C Foundation