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Don (Perth Western Australia) on 05/22/2006
0 out of 5 stars

High dose vitamin C caused my magnesium level to fall drastically. After taking high vit C for two months, I finished up in the emergency ward having defibrillation to correct severe atrial fibrillation brought on by low magnesium. Please add this warning to your advice pages, thanks.
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Replied By jacqueline (el segundo, california) on 09/10/2007

One of your writers stated that while on mega doses of vitamin C he landed himself in the hospital for an imbalance of other minerals. However, he does not say what he considered a mega dose. NOR does he mention how long he had been taking this 'mega dose'. Some people think that anything over the RDA is a mega dose. I read about a doctor/researcher who would give up to 200 milligrams per day. I, myself just finished taking 3 teaspoons/12,000 milligrams AND yet another guy, that just posted here, stated that a mere 5,000-10,000 milligrams a day are helping a woman who has (what doctors had told her was) terminal lung cancer. He thinks these are mega doses. So again, what is 'considered' a mega dose?
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Replied By DarenM (Trenton, MI) on 02/02/2009

I too experienced something like the above post in my case it was very odd and scary palpitations. After going to the doctor several times and being in the emergency room more than once I lowered the C and things started to get better. I had EKG's performed and wore a halter monitor but of course over the 24 hours period I wore the monitor nothing happened. I found more information on the internet about this before but I can't remember where. At the time of problem I was taking 5-15 grams a day of chewable sodium ascorbate with 1 gram of sugar in it (unfortunately). I now take 2-6 grams a day of pure powder ascorbic acid and I always try to take it with a meal and a cookie. :) In addition I supplement with 250mg-600mg of magnesium.

Jacqueline do you mean 200 grams? 200 milligrams is not that much.
"read about a doctor/researcher who would give up to 200 milligrams per day"

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