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Dosage Table for Vitamin C

Dosage Table: Vit. C


A Therapeutic Level of Vitamin C Supplementation as Employed by F .R. Klenner, M.D. (from "The Significance of High Daily Intake of Ascorbic Acid in Preventive Medicine," p. 51-59, Physician's Handbook on Orthomolecular Medicine, Third Edition, Roger Williams, PhD, ed.)

A Working Summation of Dr. Klenner's Formula:
350 mg Vitamin C per kg body weight per day (350 mg./kg./day)

 mg. of Vitamin "C"

 Body Weight

 Number of Doses

 Amt. per dose

35,000 mg.

220 lbs.


2,000 mg

18,000 mg

110 lbs.


1,000 mg.

9,000 mg.

55 lbs.


500 mg.

4,500 mg.

28 lbs.


500 mg.

2,300 mg.

14-15 lbs.


250 mg.

1,200 mg.

7-8 lbs.


130 - 135 mg.

These quantities may seem high; Klenner actually used as much as four times as much, typically by injection.  These are moderate oral doses. You may also give twice as many doses, with half as much "C" per dose.  Injections of C may be arranged with your physician.

Vitamin C may be given as liquid, powder, tablet or chewable tablet.  Infants often prefer finely powdered, naturally sweetened chewable tablets, which may be crushed between two spoons. You may make your own liquid vitamin C by daily dissolving C powder in a small (1 ounce) dropper bottle and adding a sweetener if necessary.  Dr. Klenner of course recommended daily preventive doses, which might be about 1/6 of the above therapeutic amount, divided 3 times daily.

Persons with sensitivity to citrus fruits, tomatoes or cranberries may feel more comfortable taking vitamin C as ascorbate, a non-acidic vitamin C. Calcium ascorbate is most frequently chosen and sodium ascorbate the least, except for injection. Transition down to a maintenance level (about 60 mg/kg/day) should be made gradually, over a period of a week or two. A kilogram is 2.2 pounds.

Dr. Klenner's Clinical Guide to the Use of Vitamin C is now posted in its entirety at

Copyright C 2005 and previous years by Andrew W. Saul.

Andrew Saul is the author of the books FIRE YOUR DOCTOR! How to be Independently Healthy (reader reviews at ) and DOCTOR YOURSELF: Natural Healing that Works. (reviewed at )

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Andrew W. Saul


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Last Updated:
April 2013


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