Still feeling tired even after good sleep? It might be more than just stress it could be Vitamin B12 deficiency., In Part 2, Dr. Pydi Satish, Consultant General Physician, explains the signs, causes, Vitamin B12 deficiency is a common health problem that can have serious consequences but doctors often overlook it B12 Injection Frequency: How Often Should You Get a B12 Shot? Liv Hospital B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics B12 & Vitamin Injections St. Catharines Contour Medical Aesthetics