How to Give a B12 Injection: Step By Step Instructions Vitamin B12 Injections Preferred Healthcare Syringes and Needles Medical Syringes Luer Lock How to draw up B12 (labeled as Methylcobalamin) Injections Transformations Weight Loss How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust Amazon.com : 12 Gauge Veterinary Needles, Cattle Needle Poultry Injection Needles 10 Sticks, Suitable for Pigeons, Chickens, Ducks, Geese, Pigs, Sheep, Horses, And Other Large And Small Animals (12*20mm) : Patio, Lawn & Garden