can b12 injections cause swelling Are Shots Safe? Royal Palm Beach Medical Group Pernicious Anemia: Definition, Symptoms, Causes

Injections are probably useless if you dont have a deficiency

This often affects the abdominal area, hips, or thighs

Take Away A vitamin B12 injection is absorbed in the blood within minutes after administration

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