dose of b12 injection VITAMIN 1000 mcg/mL B12 Injection Dose for Adults:
Description
This step ensures that the needle remains sterile as it draws the B12 solution from the vial, preventing any contamination of the medicine

For an intramuscular shot that goes deep into the muscle (like in the arm or buttocks), a longer, slightly thicker needle is needed to reach the target

Stuart (USA authors) Very comprehensive book about B12 deficiency with lots of case studies

Vitamin B12 plays a role in promoting healthy cells in nails, hair, and skin

Generally, yes safety is not the weak point here
