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These include: Individuals with pernicious anemia , a condition that causes their bodies to be unable to adequately absorb vitamin B12

In the shots I tried, I only had one issue where it left a bruise because I got all tense and freaked myself out so I went in the muscle

If you are concerned about your vitamin b12 levels or have any of the symptoms which could suggest that you might be deficient in vitamin b12, you can ask your doctor for a blood test to check your vitamin b12 levels Vitamin b12 blood tests are also offered by private labs and clinics

Those in classes S4.3 and S4.4 are non -Specified Substances

I prefer a nurse as my injector and appreciate her experience