The whole point of taking prescription medication is to help you get better. While some medication errors can be harmless, some common mistakes people make while taking prescription drugs can have adverse reactions – and even death. A 2013 American study found that adults over 40 with chronic conditions scored a C+ when it came to taking their medications properly - with one in seven of these people were given grade F. According to the Food and Drug Administration (FDA), medication errors cause at least one death every day and injure 1.3 million people annually.