How Quickly Does B12 Shot Work? Does It Help to Lose Weight? Vitamin B12 Deficiency: Symptoms, Causes & Treatment Side Effects of B12 Injection (Common and Serious) Credihealth 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 Did you know all the great health benefits a Vitamin B12 injection can provide? It can also help you feel better in 24hrs #b12injections # vitamin #Vitaminb12 #Clinic #HurstTX