Cyanocobalamin (Dodex): Uses, Side Effects, Dosage & Reviews Vitamin B12 Deficiency: Nerves & Big RBCs! "Sir, haath pair mein jhanjhanahat (tingling) kyu hoti hai?" If your patient is a strict vegetarian complaining of nerve pain and fatigue, Vitamin B12 Injection Sioux Falls, SD Vital Flow Infusions Vitamin B12 Vitamin D Life Vitamin B12 injections deliver high doses of this essential vitamin directly into your bloodstream for better absorption than oral supplements to boost energy, support red blood cell production and maintain nerve function.