whats the difference between b12 injections and b12 pills Injections: Are they more effective than supplements? B12 Shots vs. IV Infusions:
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Valentino, M A et al

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(1994, USA) had 13 students change from a lacto-ovo vegetarian to a vegan diet: All 4 with sB12 in the 600-900 range fell to below 500 pg/ml in 2 months
