It is indicated for the treatment of vitamin B deficiencies, neuropathies, and conditions requiring high doses of B vitamins
Dynamic RNA Synthetic Biology: New Principles, Practices and Potential
Although a Statistics Canada population survey published in 2013 found, on average, seniors had only slightly lower levels of B12 than younger adults
That said, some individuals are sensitive to benzyl alcohol, so for single-use peptide preparations or for those with a known sensitivity, sterile water remains the appropriate and safer option
B12 shots are no exception
Compared to 108 control subjects without evidence of dementia, subjects with dementia of Alzheimer's type and confirmed Alzheimer's disease had higher blood levels of homocysteine and lower blood levels of folate and vitamin B 12