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Cyanocobalamin This synthetic form of B12 is commonly used because its inexpensive and widely available
Potential adverse effects of hydroxocobalamin injections include injection site reactions, hypersensitivity, and rarely anaphylaxis
European Journal of Endocrinology , 143(4), 535541
Temporary Issues: If the deficiency was due to a temporary medication or a resolved medical condition, the need for shots might eventually cease once the underlying problem is gone and oral absorption is restored
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