Physicians, nurses, pharmacists and medical technicians are among the professionals that people trust the most. Most health care providers and pharmacists make every effort to help their patients and customers. But, despite their efforts, every year about 1.5 million people are injured due to medication errors. The tragedy is that nearly half of the medication errors are preventable. Many of these errors are fatal. In fact, medical errors are the third leading cause of death after heart disease and cancer.