how often do you need a vitamin b12 injection B12: Frequently Should I Get It? b12 injection how much to

The one primary-source injectable number comes from a 1990s ProCyte hair-growth patent, which describes intradermal formulations of the AHK-Cu class at 100500 micrograms per 0.1 mL in saline or sterile water [4] but that is an animal / formulation specification, not a human dose

Subcutaneous injections go into your fat, often in the belly, thigh or upper arm

It created a lot of concerns as to the quality of the compounded product and whether these products were safe and effective, he says

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Most vegans who use fortified foods or a daily supplement maintain normal B12 levels without ever needing an injection