B12 Injections at Allura Skin, Laser & Wellness Clinic Sandoz Vitamin B12 Injectable Solution 1000 mcg 10 mL Vitamin B12 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 Injection Dosage and Frequency: 7 Essential Guidelines for Adults Liv Hospital Amazon.com: Ulove Prs 12 Pack 1ml Industrial Syringes with 25Ga 1 Inch Needle, Plastic Disposable Syringe and needle for Scientific Labs, Liquids Refilling and Measuring : Industrial & Scientific