injecting vitamin b12 subcutaneous How to Give a Injection: Step-By-Step Instructions Treating Severe Vitamin B12 Deficiency

95% Confidence Intervals were calculated based on the t-distribution of the log-transformed values or the difference in the log-transformed values for GMT, then back transformed to the original scale

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doi: 10.1186/s12916-020-01810-8 26

Because of the increased risk of food-bound vitamin B 12 malabsorption in older adults, the FNB recommended that adults over 50 years of age get most of the RDA from fortified food or vitamin B 12 -containing supplements (21)