injection site for b12 Best Vitamin Sites B12 Shots at Home: How,

Acpayam C, Gne H, Gngr O, et al

[30] Cobalamin analogs prepared by this method include the naturally occurring coenzymes methylcobalamin and cobamamide, and other cobalamins that do not occur naturally, such as vinylcobalamin, carboxymethylcobalamin and cyclohexylcobalamin

Pharmacokinetics: Cyanocobalamin is administered intranasally, orally, and parenterally, while hydroxocobalamin is administered only parenterally. Once absorbed, vitamin B12 is highly bound to transcobalamin II, a specific B-globulin carrier protein and is distributed and stored primarily in the liver as coenzyme B12. The bone marrow also stores a significant amount of the absorbed vitamin B12. This vitamin crosses the placenta and is distributed into breast milk. Enterohepatic recirculation conserves systemic stores. The half-life is about 6 days (400 days in the liver). Elimination is primarily through the bile; however, excess cyanocobalamin is excreted unchanged in the urine

A landmark 2021 study by Hong et al

Its essential for producing myelin, the protective coating surrounding nerve fibers that enables efficient nerve signal transmission

Furthermore, the impaired sequestration of mitochondria into autophagosomes in Nix mutant erythroid cells prevents mitochondrial clearance, revealing a crucial function for NIX-mediated mitophagy in the maturation of erythrocytes [150, 151]