how to inject vitamin b12 in thigh self-inject intramuscular - Overview Choosing the Right Needle and
Description
Both can raise B12 levels effectively, but they behave differently once injected

Safety and efficacy for this formulation have not been evaluated by the FDA
Is injection technique optimal

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The deltoid (upper arm) is also an IM site but can be harder to reach on your own

The National Institutes of Health recommend the following daily dosage of vitamin B12: Birth to 6 months: 0.4 micrograms Infants 712 months: 0.5 micrograms Children 13 years: 0.9 micrograms Children 48 years: 1.2 micrograms Children 913 years: 1.8 micrograms Teens 1418 years: 2.4 micrograms Adult men and women 1850 years: 2.4 micrograms Adult men and women over 50 years: 25250 micrograms Women who are pregnant: 2.6 micrograms Women who are breastfeeding: 2.8 micrograms Adults over the age of 50 are at a greater risk of vitamin B12 deficiency because they tend to produce less stomach acid, which is needed to convert the vitamin properly
