lloyds pharmacy b12 injections Vitamin for energy metabolism Compounded Cyanocobalamin (Vitamin B12) Injection

1998 Oct;46(5):194-6

Cyanocobalamin injections should be used cautiously in those patients with benzyl alcohol hypersensitivity

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

The injector inserts the needle into the pinched skin layer two inches below the navel

Intramuscular sites include the arm, thigh, and hip