can i buy b12 to inject myself Injections at Home - Safety Guide for Self-Administration B12 Injections in the comfort

They are listed with injections because they are injectable services, but they require separate eligibility review, labs, follow-up, and medical oversight

Injection Site Reactions Common side effects include temporary redness, swelling, or a slight pinch sensation at the injection site

Polymorphisms in various genes involved in vitamin B 12 metabolism, including the genes encoding the intrinsic factor-cobalamin receptor (60) and the holo-transcobalamin receptor (61), have been associated with increased NTD risk in some studies

Because your body does not readily store excess amounts, toxicity from B12 is very unlikely, even at the higher doses used in injections