Similarly, a meta-analysis of nine observational studies in older adults found low serum vitamin B 12 concentration to be associated with increased risk for depression, with significant association only in women (100)
It is a research compound and is not FDA-approved
In summary, this compounded injection is contraindicated in anyone with allergies to its components, in neonates, and in patients in whom even moderate doses of B/B might pose unacceptable risks (e.g
Other good natural sources include meat, fish, eggs and dairy products
The four forms (vitamins) of B12 are all deeply red colored crystals and water solutions, due to the color of the cobalt-corrin complex (biologically relevant enzyme, it is the "core" of vitamin B12)