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Description
Helpful Patient Education Cyanocobalamin Injection, USP is a vitamin B12 injection used for vitamin B12 deficiency related to malabsorption, including pernicious anemia and certain gastrointestinal conditions
The oral formulation is particularly favored for gastrointestinal tract issues since it survives gastric acid

This is normal, no reason to worry about and the sensation should subside shortly after the injection is completed

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