One of the deadliest and most common mistakes that people make regarding their health is believing that they can get vitamins from pills. Vitamins are naturally present in foods. If any other source is involved, like an injection or a pill, then the received item is not a vitamin but an imitation created in a lab. Still, those with vitamin defiencies are often told to use these imitations to bring their levels back to normal. Why is this? Even if the supplement is designed to be chemically similar to the actual vitamin, surely our bodies know the difference.