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Keep in mind, though, that impaired kidney function may impact how much vitamin B12 you will want to take
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Instead, experts recommend that you take specific B12 pills which contain around 1,000 micrograms of B12 each day, as opposed to the approximate 250mg in regular supplements
The bigger risk is contamination if the needle has touched anything other than the inside of the vial
Gastrointestinal Conditions: Disorders like Crohn's disease, celiac disease, or atrophic gastritis can impair absorption
Effect of physiological doses of oral vitamin B12 on plasma homocysteine: a randomized, placebo-controlled, double-blind trial in India
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