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However, increased caffeine intake was associated with sleep and depressive symptoms

Cyanocobalamin works and is cheaper, but for ongoing optimization as part of a broader supplement strategy, methylcobalamin is the more direct choice

So, were looking at wanting B12 levels as being at least 550 pg/mL picograms per milliliter but ideally higher.Levels of around 200-300 picograms per milliliter, especially in the presence of symptoms, would be considered too low and below that, would be deficient

Its important to note that high on a blood test doesnt automatically mean dangerous. B12 is water-soluble, meaning your kidneys can excrete excess amounts through urine

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