how long before b12 injection works Injections: Who Should Get Them and Do They Last? B12 Shots at Home: How,
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Its naturally found in animal-based foods, but for a variety of reasons, many people struggle to get enough of it from their diets or supplements

Oral supplements, or periodic injections, may then be used to maintain adequate levels

It is absorbed by the body much better than other types of vitamin B12 and can be used very well by the body

Diminishing returns and more side effects are reported above 150 mg
