Vitamin B12 (125mg)

​Standard Therapeutic Doses: In many clinical settings, a common standard dose for B12 injections is 1,000 mcg (1 mg).  

​Concentration Discrepancy: The vial you referenced contains 25,000 mcg per mL. This is significantly higher than the standard clinical concentration often used for routine injections (which is typically 1,000 mcg/mL).  

​Administration Frequency:  

​Initial Phase: Treatment often starts with frequent injections—sometimes daily or every other day—for a period of 1–2 weeks to address an acute deficiency.  

​Maintenance Phase: Once levels stabilize, the frequency is usually reduced to once a week, once a month, or even every few months, depending on the underlying cause of the deficiency.