Cyanocobalamin (B12) Injection 1000 mcg mL, Multiple Dose Vial 30 mL McGuff A little insight to the importance of the b12 injections. My client hadn't been feeling well & had some bloods done with her GP. The results identified a severe deficiency in b12. Vitamin B12 Injection Dosage Guide: 7 Essential Dosage Facts for Adults Liv Hospital Vitamin B12 Injection Sioux Falls, SD Vital Flow Infusions VITAMIN B12 INJECTION 1000 mcg mL Oral vs. Intramuscular Vitamin B12 in Vitamin B12 Deficiency The Blood Project