The potential overdose of everything that’s doing good to your body is in trends these days and vitamin supplements are not untouched with this phenomenon. Gaining popularity these days are vitamin supplements but one that’s been overlooked is Vitamin B12. Yes the water-soluble vitamin that helps in production of red blood and DNA also lets your nervous system function properly. That sounds important right? It definitely is and still it is among the highest nutritional deficiencies in developing countries. Without the proper amount of B12 development of a certain condition referred to as pernicious anemia is possible and highly likely.