can you take multivitamins with b12 injections The 5 best vitamin supplements for 2026, according to dietitians Compounded Methylcobalamin (Vitamin B12) Injection,

Pernicious anaemia, an autoimmune loss of intrinsic factor, is the classic one

Considering Vitamin B12 injections for a health boost

This preparation is contraindicated in patients who are sensitive to cobalt and/or vitamin B12. As this product contains benzyl alcohol, it should not be used in newborns or in people who are sensitive to benzyl alcohol

For patients aiming to improve red blood cell production or normalize serum B12 levels, both forms can succeed

Proposed explanations include: Tissue retention of peptide or active metabolites Persistent activation of signaling cascades beyond peptide clearance Potential for active metabolites with prolonged tissue residence Excretion Pathways Limited data on elimination routes indicates: Likely renal excretion of peptide fragments based on molecular weight and water solubility Potential hepatic contribution to metabolite clearance No evidence of accumulation in chronic dosing studies in rats and monkeys Degradation products eliminated without evidence of toxic metabolite formation The dramatic disconnect between three-minute plasma half-life and prolonged metabolic effects remains one of the most intriguing and poorly understood aspects of AOD-9604 pharmacology, requiring further mechanistic investigation