glutathione methylation Metabolism - an overview Methylation | DNAlysis
Description
Answer: The best injection site for a B12 shot can depend on personal comfort and ease of access

[3] No Upper Limit Safety Recommendations Exist No adverse or toxic reactions for vitamin B12 have occurred in individuals through dietary consumption or supplement use

Progesterone and estradiol modulate interleukin-1 beta messenger ribonucleic acid levels in cultured human peripheral monocytes
Guyenet PG
It should not be done at home