b12 injection is what drug class Cyanocobalamin: Package Insert / Prescribing Information B12 Injections – Nashville -
Description
B12 deficiency can also lead to the destruction of immature red blood cells in the bone marrow, which can cause jaundice (yellowing of the skin and whites of the eyes)

For this reason, Taylor advises people who include organ meat in their diet to do so in moderation
2500 mcg B12 26.00 5000 mcg B12 50.00 Flagship B12 Shots GLUTATHIONE* STRAIGHT UP 26.00 This powerful antioxidant protects from free radical damage, aids in recovery and is great liver support, aiding in detoxification while supporting every cell in the body

In another study, vitamin B12 at concentrations above 100 nM is shown to increased Erk1/2 and Akt activities during the methylation cycle and subsequently facilitated neuronal growth 16