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Allergic Reactions In rare cases, some people may have a severe allergic reaction to ingredients in the B12 shot
Frequency depends on your baseline B12 levels and wellness goals: Initial deficiency correction: 12 injections per week until B12 levels stabilize
Trends Endocrinol Metab 28 (5), 340353
B12 deficiency is more common than widely recognized, particularly in individuals who follow plant-based diets, take proton pump inhibitors or metformin, are over 50, or have gastrointestinal conditions affecting absorption
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