Vitamin B12 (cobalamin) and folate (vitamin B9) are vitamins that serve important functions in the human body. Folate is needed for development and growth of cells (including red blood cells) and synthesis Vitamin B12 Injection 2ml:0.5mg,1ml:0.5mg Suppliers, Exporters, and Manufacturers China Medicine Vitamin B 12 Injection, 3,000 mcg mL at Tractor Supply Co Vitamin B12 shots, microneedling, ear candling do any of these at home medical treatments work? Optimal B12 Injection Sites for Maximum Absorption and Benefits Your Health Magazine