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Old 11-26-2010, 09:34 PM   #8
Garrett Smith
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Join Date: Feb 2007
Location: Tucson, AZ
Posts: 4,326

Supposedly toxicity symptoms start around a blood level of 200 (I forget the units right now).

I've seen one patient taking 4000 units a day get her level to 106, she's been the outlier. Most people taking 5k/day get between 50-80 (which is where I want them), some need up to 10k to get there. This is why testing and re-testing is important.

I'm not so sure about people mega-dosing D3 every time they get a cold (flu, yes). With some people who get colds often, massive D3 dosing anytime they feel something could possibly get to toxicity over time. Seen this pattern before.
Garrett Smith NMD CSCS BS, aka "Dr. G" - Blood, Saliva, and Stool Testing
My radio show - The Path to Strength and Health
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