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Updated on What is the best place to give yourself a B12 shot

How to inject vitamin B12 in your arm Instructions to inject vitamin B12 into your arm B-12 injections are often given in the arm and especially, in medical terms, the deltoid part of the shoulder

For instance, the majority (58%) of mouse microbiome studies published in 20182019 did not report the number of mice per cage, and less than 20% of studies reported using singly-housed animals 64

Symptoms of vitamin B12 and folic acid deficiency anemia include: Shortness of breath Headache Indigestion Loss of appetite Heart palpitations Vision problems Feeling weak or tired Diarrhea Pain or redness of the tongue, sometimes with mouth sores Problems with memory, comprehension, and judgment (cognitive changes) Some of these symptoms may also occur in people who are deficient in vitamin B12 or folic acid but are not anemic