can you give vitamin b12 injection subcutaneously Store Intramuscular vs Subcutaneous Injections for vitamin B12 supplements Best Vitamin B12 Injection Site:

A B12 deficiency can cause demyelination, leading to neuropathy with neurological signs like numbness, pins and needles, and muscle weakness, especially in the feet and hands

Hasan, T., R

So injecting beyond a certain point may cause your cells to fight off the excess B12 so hard that it might reduce the amount of active cellular B12 - probably not to dangerous levels, but possibly sufficient to trigger some symptoms

If you have limited dietary intake of B 12 and experience symptoms listed in box 1, you might have B 12 deficiency

This can be another incredibly convenient option, as you can get your shot while youre already out running errands

Symptoms include headaches, dizziness, insomnia, or fatigue