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b-12 why do people need b12 injections Curious about shots? B12 Happy Hour | B12
Description
Generally, a healthy diet rich in meat, fish and dairy products provide a natural source of vitamin B12 required for the body, but it may be deficient in vegetarians and vegans

Subcutaneous injections are administered under the skin into fat between the skin and muscle
Its a medical treatment for a diagnosed deficiency, not a general wellness boost
Thats not something that any supplement will help resolve faster, Cohen said

This allows time for the injected solution to disperse into the surrounding tissue rather than tracking back up the needle path

British National Formulary (BNF)