There is nothing to worry about except that it might not work if you don't do it correctly.
1000mcg dose is absorbed in humans at about 13mcg, from the small intestine. Sublingual use is not documented well, and don't count on it working that way. You will swallow it with your saliva, and it will travel to the small intestine, and be absorbed.
I have a study on this here:
http://www.ncbi.nlm.nih.gov/pmc/arti...able/T1/#TF1-4
There is no upper limit of toxicity for this vitamin. Your large dose is not biologically large, because 90% or more is NOT absorbed and leaves in your stool.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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