You can get Vitamin B12 shots in three ways: intramuscularly (IM), subcutaneously, or intravenously (IV)
Where to Get Help if You Dont Want to Self-Inject B12 Knowing how to inject B12 yourself might not be all you need
This page is only for those patients of Ivy Grove Surgery If you would like to self-administer B12 injections at home, please let our practice nurse know at the time of your next visit Last update: June 17, 2026 HOW TO SELF-ADMINISTER B12 INJECTIONS AT HOME SHORTCUT ivy.gs/b12 Important warnings Please download and read this safety information letter
It depends on how bad your deficiency is and how you react to treatment
Some patients feel as though they want more frequent injections, and occasionally we test levels to see if they are receiving adequate replacement, but Im not sure how strong the evidence is to support this. GPs should consider periodic vitamin B12 testing of higher-risk patients who take metformin, even if they dont display symptoms of deficiency, the UK medicines regulator said earlier this year