can i inject b12 and testosterone together Vitamin Injection Sites: All You Need to Know How to perform intramuscular (IM)

This observation has spurred extensive investigation into its physiological roles

Patients with pernicious anemia should be instructed that they will require monthly injections of Vitamin B12 for the remainder of their lives

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

References: OLeary, F., & Samman, S