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If your B12 levels are low or high, you wont know the next steps to take

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Baltimore vitamin supplementation specialist, Eric Nager, M.D

GIP was measured using ELISA as per the manufacturers instructions (Millipore)

After opening (vial seal broken): The USP product labeling recommends refrigeration after opening for optimal storage

The Science Behind Sublingual Absorption Sublingual delivery works because the tissue under your tongue is: Highly vascularized (rich in blood vessels) Thin and permeable to nutrients Connected directly to systemic circulation Not subject to first-pass metabolism This allows B12 to enter your bloodstream almost as efficiently as an injection, without the needle