EGF is bioactive but barrier-limited: the molecule does what it does only if it reaches the keratinocyte layer, and standard topical formulations deposit most of it on the stratum corneum where it has no relevant receptor
Hydroxocobalamin is one of the most common sources of B12 that medical professionals give through an injection
NAD+ metabolism, stemness, the immune response, and cancer
Vitamin B12 injections are a vital treatment for those with pernicious anaemia, a condition characterized by a lack of intrinsic factor a protein that binds and absorbs vitamin B12
Vegans and vegetarians are at risk for B12 deficiency, so they may also want to consider getting injections
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