Vitamin B12 Injections: Unlock Energy, Focus & Vitality Needle Size for B12 Injection: 5 Must Know Tips Boost your energy with B12 injections Stop by when our nurse staff is available for injection, or pick one up to administer at homeeasy and convenient. $25 per shot! DM us Dr. prescribed B12 injections. Pharmacy only gave me vials. Where do you get your needles and syringes? What size?? Where do I inject? : r B12_Deficiency B12 Shots Richardson Weight Loss Richardson Vitamin B12 Injections Vitamin B12 10 Week Injection Cycle Kit: Syringes & Needles & Alcohol Wipes only 5.22