b12 injection im or sq How to Use These 4 Spots Safely b12 injection sites subcutaneous injections

PubMed 22962027 TB-4 Phase 1 human safety first-in-human randomized, double-blind, single- and multiple-dose Phase 1 of recombinant human thymosin 4 in healthy volunteers, no serious adverse events: PubMed 34346165

The correct size minimizes pain, facilitates proper delivery of the vitamin, and reduces the risk of complications like infections or tissue damage

Vegetarians and vegans may have low dietary intake since B12 comes almost entirely from animal products

Cyanocobalamin is a synthetic form of B that contains a cyanide group, whereas hydroxocobalamin is a naturally occurring form produced by bacteria

You might consider wearing sterile gloves

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