what happens if you inject vitamin b12 into a vein Injection Dosage for Adults: Guidelines How to Give a B12

B12 is safe on its own, but a few conditions call for extra care, which is why a provider reviews your history before treatment: Leber's hereditary optic neuropathy, a rare inherited eye condition, where certain forms of B12 may be a concern for the optic nerve

Sunlight interacts with a protein in our skin called 7-DHC, and the result is active vitamin D3, the most common winter vitamin deficiency

Metabolites complicate it further

It is due to an autoimmune disease

That means the body can more easily use this form of B12, making it more effective

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