Its small size may support skin penetration, although this also depends heavily on the overall formulation and delivery system
Others who might be prescribed B12 shots are those at the highest risk for a B12 deficiency, including: Vegans, since vitamin B12 is found only in animal products People ages 60 and up since their bodies don't absorb B12 as efficiently People with Crohn's disease or pancreatic disease, since they prevent nutrient absorption People who had weight-loss surgery, which decreases B12 absorption People with an eating disorder People with HIV People with diabetes Since a mild B12 deficiency might not cause symptoms, it can go undetected for years since levels are not checked during routine blood work
Additionally, gas chromatography has demonstrated that ethanol has a partition coefficient in membranes with PG and PS headgroups nearly double that of PC headgroups [356]
Always inform your prescribing physician about all medications you take
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On top of that, Royal Mail charge 8.00 for processing it