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Description
These subjective reports are impossible to verify without controlled trials
The most chemically complex of all the vitamins, methylcobalamin is a water-soluble, organometallic compound with a trivalent cobalt ion bound inside a corrin ring which, although similar to the porphyrin ring found in heme, chlorophyll, and cytochrome, has two of the pyrrole rings directly bonded

How do you give a vitamin injection

You can get a B12 shot from your doctor or your grocery store vitamin section

A cell under chronic oxidative bombardment sustains protein damage, mitochondrial DNA mutations, and lipid peroxidation

Neurological impact of vitamin B12 deficiency
