bad reaction to b12 injection Why do I feel worse after a injection? B12 Shots: Vitamin B12 Injections

It acts as an active form of Vitamin B12 in the body

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Cyanocobalamin does not naturally exist in foods owing to the presence of cyanide, which is absent in the natural form of the vitamin

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For many people, factors like underlying health conditions, lifestyle choices, or even just the natural process of aging can make it difficult to maintain healthy B12 levels