self injecting b12 Vitamin Injection Sites: All You Need to Know Best Vitamin B12 Injection Site:
Description
For intramuscular injections, 22-25 gauge is preferred, while for subcutaneous injections, 25-27 gauge is suitable

Better biochemical assays (e.g., holo-transcobalamin II) and functional outcome measures in mothers and children would help address this possibility
B12 may be injected into a muscle or under the skin at 100 mcg daily for a week, every other day for another week, and then every three or four days for a month

Several combination preparations of different B 12 forms and combinations with vitamins B 1 and B 6 are available
