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Injections are probably useless if you dont have a deficiency
Expose the top of the arm (fig
Comparing Speed, Absorption, and Daily Usage Absorption speed is the key difference between Vitamin B12 injection vs oral
Others dont want to take on the responsibility of measuring doses and managing sterile conditions
For those with significant deficiencies, this may be less efficient than the higher, less frequent doses provided by injections
Heres how to do a subcutaneous injection: Use a 5/8 inch, 25-27G needle
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