is a b12 injection intramuscular Injections at Home - Safety Guide for Self-Administration B12 Shots vs. IV Infusions:
Description
Ensuring you take B12 only after a full meal to aid absorption
"Detecting peptidic drugs, drug candidates and analogs in sports doping: current status and future directions"

They can also help treat B12 deficiency

Unlike Hydroxocobalamin, Cyanocobalamin is a synthetic version that can be purchased over the counter at your local pharmacy, grocery store, or health food shop
