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 Too Much Vitamin B12: Is It Bad for Your Health? DripGym B12 Injection sites + How to use B12 Shots Safely B12 Injections Booster Shots at Wirral & Liverpool Clinics What Happens If You Inject B12 Wrong: 6 Red Flags The Truth About B12 Injections: Benefits, Cost & How They Work