how to inject vitamin b12 Injections at Home - Safety Guide for Self-Administration Best Vitamin B12 Injection Site:

Indeed, some mammalian herbivores (including rabbits, mice, rats and primates) practice coprophagy to obtain Cbl as they fail to obtain sufficient vitamin from vegetarian dietary sources

Biotin (Vitamin B7): Functions: It maintains healthy hair, skin, and nails and is also considered a metabolite

The compound's selectivity profile minimizes concerns about off-target effects, but investigators should consider potential interactions with other NAD+-modulating interventions or compounds that affect methylation metabolism

When needle tips become weak, the chance for breakage increases

Please note: liver is also high in other nutrients such as copper (which is needed for iron absorption, but people with copper toxicity may need to avoid liver supplements)