does b12 have to be injected into muscle Vitamin Injection Sites: All You Need Know What are the Different Types

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General multivitamins typically dont have enough B12, and require an additional supplement.

Fortified foods like breakfast cereals and nutritional yeasts offer a convenient option, especially for vegetarians and vegans

Doses beyond that threshold produced no additional benefit but increased cost per injection cycle by 300%

You may have a deficiency if you are vegan, if you have other health conditions which mean you are unable to absorb it properly such as pernicious anaemia, you take disruptive medications such as antacids or other lifestyle factors such as alcohol intake