can vitamin b12 injections be given subcutaneously Optimal Injection Sites for Maximum Absorption and Benefits Cyanocobalamin (b12) Injection 2,000 mcg/mL

other allergic reactions that have been reported include erythema, skin rash (unspecified), pruritus, general malaise, and respiratory difficulty due to bronchospasm

While both contain B12, lipotropic injections include additional compounds that target fat metabolism

It is recommended for two distinct indications: It is indicated in the treatment of vitamin B12 deficiency due to a lack of absorption - biermer's disease, - ablation of the stomach or part of the intestine, - imerslund's disease, and in this case it should be administered by intramuscular injection

This is explicitly stated in Hospira's own labeling for their bacteriostatic water for injection product