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But I try very, very hard to remain very positive
Side effects, interactions, and precautions Vitamin B12 is generally well tolerated when used as directed, but side effects can occur and may vary by formulation
It is not a drug, dietary supplement, food additive, cosmetic, or therapeutic agent, and must not be used in or on humans or animals
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Because they are so effective, injections are a reliable way to manage a deficiency and avoid common treatment pitfalls that can occur when absorption is a problem
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