Here are the best vitamin B12 injection sites for each method: Subcutaneous B12 injection sites Usually, the best places to give yourself a B12 shot subcutaneously are the abdomen, thigh, and upper arm, as you can see in this illustration: Although not shown above, the buttock is another good site for B12 shots
It has been extensively characterised in preclinical in-vitro and in-vivo models for its cytoprotective, angiogenic, and anti-inflammatory properties across a range of tissue types
Kidney Dysfunction: While the kidneys do not directly excrete vitamin B12 efficiently, impaired renal function may lead to elevated serum B12 levels by reducing the clearance of B12-binding proteins or altering their metabolism, thereby contributing to B12 accumulation 8
Another animal study showed that the administration of vascular growth factors led to penile neovascularization, a possible long-term solution to vasculogenic ED [13, 14]
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Japanese Journal of Psychiatry and Neurology