Vitamin B 12 Injectable Solution Vitamin B12 deficiency, sometimes called cobalamin deficiency, happens when your body is either not getting enough or not absorbing enough vitamin B12 from the foods you eat. Vitamin B12 is an important Methylcobalamin B12 Injection in Beverly Hills, Arcadia and Los Angeles County California Infusion Centers At Home Vitamin B12 4 Week Injection Package MUST BE A FLORIDA RESIDENT