Yes, B12 injections are generally considered safe for most people, but its always a good idea to consult your doctor before starting, especially if you have any underlying health conditions
Vitamin B12 itself is a water-soluble vitamin your body uses to make red blood cells, keep the nervous system healthy and release energy from food
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
Some providers allow home injections after teaching proper technique, dose measurement, and safe needle disposal
