Oral works, sublingual is really just oral. The B12 dissolves in the saliva, and you swallow that.
So take your sublingual or oral on an empty stomach as, food blocks absorption. That assures that some will be absorbed.
Studies have shown 13mcg absorption from 1000mcg oral tabs.
Most people see substantial improvements in levels within 3 months if taken correctly.
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Weezie looking at petunias 8.25.2017
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