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Retrieved from Center for Drug Evaluation and Research

Ans: Injectable Vitamin B12, or cyanocobalamin injection, is the better choice when a pet has gastrointestinal problems that make it hard for the body to absorb nutrients properly

This new study examined 536 subjects, so it wasn't huge, but not small either

An intradermal test dose is recommended prior to administration in patients suspected of being sensitive to the drug

Advertisement Article continues below this ad In addition to pain, an abnormal increase in red blood cells, a runny nose, chest pain, a swollen tongue, and fever are additional adverse reactions that may occur after the injection

Am J Clin Nutr 2013;98:14508
