For Doctors: Preparation of Vitamin C IV's

Vitamin C: I.V. Use


Preparation of Sodium Ascorbate for IV and IM Use
(For physicians only)


The following are excerpts from letters Dr. Cathcart sent out to physicians on the subject of IVC.

If the physician does not want to make their sodium ascorbate stock solutions from scratch like I recommend (and I can well understand why you might not), you can order from 

Merit Pharmaceuticals, 2611 San Fernando, Los Angeles, CA 90065. For CA 800-696-3748; Out-of State 800-421-9657. To order the Sodium Ascorbate Fine Crystals, specify Roche.

Wholesale Nutrition, 915 S. San Tomas Equino Road, Campbell, CA 95008. 800-325-2664 or FAX 408-867-6236

( editor's note: Ascorbate (vitamin C) for intravenous use is also available elsewhere. An internet search is recommended. We have no financial connection whatsoever with any health products company. Intravenous or injectable use of a vitamin absolutely requires your physician's participation. DO NOT ATTEMPT TO SELF-INJECT.)


The Stock Bottle of Sodium Ascorbate
Sterilize a 500 cc IV bottle along with a funnel, the rubber stopper, and a spoon. Then fill the bottle to the 300 cc line with sodium ascorbate fine crystals. (I weighed the sodium ascorbate out one time and 250 gm came up to the 300 cc line.) Then add 1/3 of the 20 ml bottle (6.6 cc) of edetate disodium injection, USP 150 mg/ml. Then add water for injection q.s. 500 cc. Shake up the bottle and if there is 1 mm of crystals left on the bottom, add 1 mm of water to the top. It turns out that sodium ascorbate is soluble to almost exactly a 50% concentration at room temperature. I do not worry about the sterility of this because this is very bacteriocidal. Perhaps it should be filtered to get out particulate matter but I have never seen this to be a problem. The pH of this has always turned out to be 7.4. My nurse discovered recently that if you do not shake the mixture to make it go into solution until after you refrigerate it and are ready to use it that the solution is less yellow. I presume that this is good because sodium ascorbate is clear and dehydroascorbate is yellow. The made up solutions are always a little yellow but refrigeration before mixing results in a far less yellow mixture. 

Preparation of the IV Bottle
I recommend that the above stock bottle solution be added to lactated Ringer's such that 30 Gms (60 cc) to 60 Gms (120 cc) this be added to a quantity of lactated Ringer's sufficient to make 500 cc of the final solution to be injected IV. I had been using water for injection some time ago because this solution is several times hypertonic already and I did not want to add more tonicity. However, recently I have found that lactated Ringer's feels better to patients so I use that for the final dilution (not the stock solution described above.) 

IM Injections
IM injection material for infants is made from the stock solution diluted 50% in water giving a 25% solution. Generally, the size of the injection can be 2 cc in each buttocks. Ice may be applied if it hurts to much. This may be given every hour or so, frequently enough to bring the fever or other symptoms of excessive free radicals down rapidly.

General Comments
I have not had any trouble with these solutions. I hear all sorts of weird stories from patients who have gotten ascorbate elsewhere. I do not know if it is an acid problem (because ascorbic acid was used rather than sodium ascorbate) or whether some colleges get carried away with what other things they add to the intravenous solutions. 

I think that there may be, at times minor troubles with commercially prepared solutions because of the following. I understand that the U. S. Pharmacopeia specifies that the solutions be made from ascorbic acid and then buffered with sodium hydroxide or sodium bicarbonate to a pH between 3.5 and 7.0. I worry that 60 grams of ascorbate at a pH of 3.5 is too acid. I know that Klenner (the first physician who used high dose intravenous ascorbate by vein) also made his solutions from sodium ascorbate powder. 

I watch patients for hypocalcemia (although I have not seen it), hypoglycemia (I encourage patients to eat while taking the IV), and dehydration (I encourage water and slow the IV down.) I also see headaches afterward but not so much since I have been emphasizing the continuing high doses of oral ascorbic acid as soon as the IV is over. Actually I give oral ascorbic acid while the IV is going to get a double effect. Bowel tolerance goes up while the IV is running but one has to be careful to stop giving oral C about an hour before the IV stops or else you may get diarrhea as soon as the IV stops. The oral ascorbic acid is then started again 1/2 to 1 hour after the IVC stops. 


Copyright (C) 1996 Robert F. Cathcart, M.D.. Permission granted to distribute as long as distributed intact and with this attribution. 


Andrew W. Saul


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