Vitamin B12 Injections: Benefits and Risks B12 Injections East Valley Urology Center of Arizona Self injecting vitamin B12. Quick and painless jabs after a B12 by Dr Caroline Palmer Medium 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 Wow guys, you've been gate keeping!! Got my first B12 injection last week and it's like I am awake for the first time since having kids 20 years ago It's Vitamin B12 Injection Dosage For Adults: A Comprehensive Guide. La Vie Med Spa