injectable b12 dosage Vitamin Injection Dose For Adults Vita-Jec B12 1000 mcg/mL

Blood reviews

Concentrations above 2 percent are rarely necessary and may increase irritation risk without proportional benefit

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

Trends in Endocrinology and Metabolism (2017) 7

Are These Injections Safe for Long-Term Use

Cycle Length Most practitioners recommend cycles of 8-12 weeks, followed by a break